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1
Wilson, Marc L. "New Mexico: Bureau of Mines and Mineral Resources Mineral Museum: SOCORRO." Rocks & Minerals 67, no. 5 (October 1992): 335–39. http://dx.doi.org/10.1080/00357529.1992.9926501.
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2
Wang, Wei Zhi, and Chun Guang Yang. "Comprehensive Utilization and Resources of Gold Mining Tailings." Key Engineering Materials 480-481 (June 2011): 1438–41. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.1438.
Повний текст джерелаАнотація:
The gold mine discharges tailings massively every day,which results in gold and useful metal draining,simultaneously brings the enormous harm to the environment The approach to comprehensive utilization of tailings of gold mines, including recycle of usable mineral and direct use of ore tailings,is analyzed in the paper, laying a foundation for continuous development of gold mines，comprehensive utilization of resource，and protection of environment.
3
Meng, Xian Fu. "Discussion on Geological and Geochemical Methods for Prospecting at Surrounding of Crisis Mines." Advanced Materials Research 616-618 (December 2012): 246–49. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.246.
Повний текст джерелаАнотація:
As the supply situation of the mineral resources is gradually worse, the subject of resources crisis mines is becoming a hot topic at domestic related research fields. Prospecting potentiality of crisis mines is an enormous. But how to find new deposits in deep and surrounding of crisis mines by using the data of geology, deposits exploration and adopting resonable prediction manner is a very urgent problem which confronts with mining industry. Author analyze the regional metallogenic geological setting, predicate and evaluate surrounding favorable region by similarity analogy principle and research data of geochemistry which obtain from mining. This may provide theoretical guidance and scientific basis to other crises mines deep and surrounding resources exploration.
4
Zhou, Xue Lian. "Development and Utilization of Circular Economy and Urban Mining - Chengdu City Based Renewable Resource Industry Survey." Applied Mechanics and Materials 768 (June 2015): 644–51. http://dx.doi.org/10.4028/www.scientific.net/amm.768.644.
Повний текст джерелаАнотація:
Along with the process of economic growth and urbanization, China has entered a peak period of electronic appliances and automotive industry products obsolescence. On one hand, municipal waste disposal is increasing and causing environmental pollution and damage; on the other hand, native mineral resources’ exhaustion has increased year by year along with exploitation difficulty and mineral resources import growth. Meanwhile, urban industrial scrap, aka "urban mines", does contain abundant of renewable resources, such as copper, iron, and aluminum. Therefore, based on the theory of circular economy, the exploitation of these "urban mines" is the key strategic industry of China’s "12th five-year plan". This paper is based on the survey of Chengdu city regeneration resources industry situation. We analyzed the current status of regeneration resources recycling industry in Chengdu city, finding problems such as the number of existing garbage collection stations inadequate for renewable resources, and processing technology out of date. Generally speaking, the renewable resources industry in Chengdu is under developed.
5
Sermet, Edyta, and Marek Nieć. "Not Mining Sterilization of Explored Mineral Resources. The Example of Native Sulfur Deposits in Poland Case History." Resources 10, no. 4 (March 31, 2021): 30. http://dx.doi.org/10.3390/resources10040030.
Повний текст джерелаАнотація:
The sterilization of mineral resources makes considerable amounts inaccessible for future use and may be a barrier to the free supply of commodities. During the exploitation of mineral deposits, some parts of their resources become sterilized as inaccessible because of natural hazards or unfavorable economic conditions. Not mining land use and the social opposition against mining is the purpose of sterilization of considerable demonstrated mineral resources of deposits not yet engaged in exploitation. The native sulfur deposits in Poland are a good example of such “not mining” sterilization, which makes a considerable part of known resources inaccessible. On the northern border of the Carpathian Foredeep within the Miocene gypsum formation, the systematic exploration had demonstrated about 1 billion tons of sulfur resources located in the deposits of varied dimensions. The sulfur opencast mining and underground melting (the modified Frasch method) flourished from 1958 up to 1993. The increasing sulfur supply, recoverable from hydrocarbons, caused the closing down of sulfur mines, leaving a place with considerable untouched resources. About 67% of sulfur resources left by closed mines and of other explored but not exploited deposits are sterilized by the advancement of settlements, industrial plants, road construction, and by social opposition against mining.
6
Bud, Ioan, Dorel Gusat, and Simona Duma. "THE ENVIRONMENTAL IMPACT OF ANDESITE EXPLOITATION IN PROTECTED AREAS." Scientific Bulletin Series D : Mining, Mineral Processing, Non-Ferrous Metallurgy, Geology and Environmental Engineering 32, no. 2 (2018): 27–33. http://dx.doi.org/10.37193/sbsd.2018.2.03.
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Romania has the potential for mineral resources but lacks a coherent exploitation and valorisation strategy and at the same time a legislation that supports the strategy. The fundamental principle of the Mines Act is to stimulate the valorisation of mineral resources, public ownership of the state, and to ensure fair competition. The paper analyzes the impact of non-observance of these principles through the development of illegal exploitation, even worse in protected areas.
7
Ghebremusse, Sara. "Good Governance and Development in Botswana – The Democracy Conundrum." Law and Development Review 11, no. 2 (June 26, 2018): 913–38. http://dx.doi.org/10.1515/ldr-2018-0041.
Повний текст джерелаАнотація:
Abstract Unlike many of its African neighbours, Botswana achieved levels of socio-economic development in spite of its abundant mineral wealth. Botswana’s effective management of its mineral resources also aided in its avoidance of the resource curse and corresponding weak institutions. The contribution of Botswana’s mineral wealth to its development best characterizes the country as a “resource-rich developmental state.” However, the correlation between democratic principles and institutions to Botswana’s developmental success was unclear. This paper examines the connection between democracy and development in Botswana by relying on the “thin” versus “thick” spectrum of democratic institutions expounded by Mariana Prado, Mario Schapiro, and Diogo Coutinho. The paper argues that Botswana’s institutions are not democratically “thick”; therefore, democracy and “good” governance, as its conceived neoliberally, do not explain Botswana’s development outcomes. Instead, this paper contends that David Trubek, Diogo Coutinho, and Mario Schapiro’s “legal functionalities” framework, which credits the success of development policies to four roles the legal system could play: (i) safeguarding flexibility, (ii) stimulating orchestration, (iii) framing synergy, and (iv) ensuring legitimacy, is better suited to explain the success of Botswana’s resource-rich developmental state.
8
Tran, Hieu Quang, Nam Xuan Bui, Hoang Nguyen, Tuan Anh Nguyen, and Long Quoc Nguyen. "Applicable posssibility of advanced technologies and equipment in surface mines of Vietnam." Journal of Mining and Earth Sciences 61, no. 5 (October 10, 2020): 16–32. http://dx.doi.org/10.46326/jmes.ktlt2020.02.
Повний текст джерелаАнотація:
Vietnam has abundant and diversified mineral resources with more than 5, 000 mines of 60 discovered and exploited minerals. Besides of surface coal mines mainly located in Quang Ninh, the types of minerals being exploited by surface mining method consist of metal ores (iron, titanium, manganese, gold, zinc, copper, antimony) and non - metallic ores, and construction materials (stone, sand, gravel, etc.). In the paper, authors researched and proposed the advanced technologies and equipment based on Industry 4.0, that can apply effectively for surface mines in Vietnam in order to ensure safety and enhance surface mining effect.
9
Nguyen, Ngoc Minh, and Duc Thang Pham. "Tendencies of Mining Technology Development in Relation to Deep Mines." Mining science and technology 4, no. 1 (April 27, 2019): 16–22. http://dx.doi.org/10.17073/2500-0632-2019-1-16-22.
Повний текст джерелаАнотація:
Mineral demand rapidly increases; as a result, underground mining activities gradually dig into the earth’s crust to deeper levels. For instance, the depth of coal mines has reached 1500 m, whereas the depth of mines for nonferrous metals has already achieved around 4500 m. Deep mining faces a number of technical and environmental challenges, first of all, great rock mass stresses, high temperature and long winding distance. The traditional technologies are hardly capable to provide the development and extraction efficiency and safety. That is why the need in developing and implementation of new modern mining technologies arose. In roadheading, TBM (tunnelboring machine) method is gradually introduced. A TBM combines the functions of rock breaking, support installation, mucking and conveying rock. In mining industry, smart mining based on mechanized and automated mining methods is successfully implemented at coal mines. Besides, a technical concept of fluidized mining for deepseated mineral resources (6000 m and more) was proposed. This paper presents the review of the current global status of deep mining and highlights some of the newest technological achievements in roadheading and the mineral extraction processes.
10
Pungrassami, Thongchai, and Pairat Sanguansai. "An Overview on Rare Earth Mineral Resources/Reserves of Active Tin Mines in Thailand." Materials Science Forum 70-72 (January 1991): 557–76. http://dx.doi.org/10.4028/www.scientific.net/msf.70-72.557.
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11
Kaplunov, D. R., and V. A. Yukov. "Accounting for regional features of mineral-resources base in re-equipment of underground mines." MINING INFORMATIONAL AND ANALYTICAL BULLETIN 9 (2018): 25–34. http://dx.doi.org/10.25018/0236-1493-2018-9-0-25-34.
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12
Huang, Xu, Ke Hu, Xin Li, and Yao Liu. "What Kind of Mines Could Be Called Green Mine? - A Study on the Standard of Green Mine." Applied Mechanics and Materials 295-298 (February 2013): 708–11. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.708.
Повний текст джерелаАнотація:
The concept of Green Mine was first introduced in China in 2006. Up to now, the Ministry of Land and Resources, P. R. China (MLR) mandated the development of green mines which totaled to 220. Some experts query the nine conditions, which compose the present standard of the Green Mine, considering them not quantifiable, strict and practical enough. Therefore, we recommend the government to add Delphi method and some other quantifiable indexes into the present standard. Look into the distance, we may improve the theoretic study, summarize and generalize the experience of the Green Mine. Gradually improve the Green Mines construction standard and management measures of different regions, scale and different mineral resources.
13
Tang, Bo, and Xiao Guang Zhao. "The Investigation and Analysis of Environmental Geological Problems in Coal Mines in Yulin City." Applied Mechanics and Materials 496-500 (January 2014): 2933–36. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.2933.
Повний текст джерелаАнотація:
The activities of mineral development and utilization produced serious environmental geological problem in mines in Yulin city. There are mainly three problems. The first one is waste of resources, including encroach on land, destruction of the vegetation and waste of water resources, ect. The second one is geological hazards, including collapse, landslide debris flows, soil loss, sandy land and failure of tailings dams.ect. The third one is environmental contamination, including water pollution, air pollution, soil pollution and food chain destructions. Making reasonable plan to exploitation and utilization of coal mines,and dividing the exploration area into key exploration area, encouraged exploration area, limited exploration area, and prohibited exploration area, which is the basic measure to avoid and reduce these environmental geological problems.
14
Kapageridis, I., A. Apostolikas, S. Pappas, and I. Zevgolis. "Use of mine planning software for the evaluation of resources and reserves of a sedimentary nickel deposit." Bulletin of the Geological Society of Greece 47, no. 4 (September 5, 2013): 1980. http://dx.doi.org/10.12681/bgsg.11021.
Повний текст джерелаАнотація:
The use of mine planning software in the evaluation of deposits and estimation of mineral resources and reserves has become widespread and is considered a prerequisite for the reporting of reserves according to international reporting standards and codes. The main principles of operation and application of these codes are transparency of reported material, the relevance of reported information (materiality) and the competence of people involved in producing the reports. The application of specialised mine planning software described in this paper currently takes place at operational mines of sedimentary nickel deposits in Central Evia, Greece. It involves all stages of processing of exploration data including entry, analysis, processing and modelling of data, geostatistical estimation of quantities and qualities of mineral resources and mineral reserves, and the design, optimisation and scheduling of mining operations.
15
Corriveau, Louise, and Thomas Clark. "Introduction to the Grenville Province: a geological and mineral resources perspective derived from government and academic research initiatives." Canadian Journal of Earth Sciences 42, no. 10 (October 1, 2005): 1637–42. http://dx.doi.org/10.1139/e05-117.
Повний текст джерелаАнотація:
Canadian society faces a significant decline in the number of active mines and in the discovery rate of base and precious metal deposits. Exploring in the shadows of active and former mines with improved metallogenic models and new technologies is one way to address this problem. Another way is to diversify mineral exploration outside known mining camps and target prospective but underexplored settings and nonconventional mineral deposits. In Canadian terms, diversifying exploration commonly translates into targeting gneissic and granitic terrains where modern geoscience knowledge may be rare or only at reconnaissance scale and where key regional and local indicators and vectors to ore may be missing in the geological record. Though underexplored settings abound in Canada, only one orogen has an aura that discourages exploration: the Grenville Province. Consequently, even though the Grenville Province provides the best model of a deep continental-collision zone so far studied anywhere on Earth and constitutes a microcosm of continental accretion, it remains underexplored, underprospected, undermapped and underestimated. It is thus essential to revisit the mineral potential of the most accessible orogen of the Canadian Shield, search for its missing volcanic belts, reexamine its ore deposits and mineral occurrences, and explore new research avenues using the best remote-sensing device on Earth: human eyes. This special issue captures advances associated with regional field investigations by government that played a special role in opening up frontier areas for mineral exploration. Papers stemming from academia and governmentuniversityindustry consortiums investigate further some of the topics covered by these and earlier surveys and others contribute structural and metamorphic insights that will be valuable in future mapping projects. The advances reported here for the Grenville Province may provide impetus to revisit other Grenville-age terrains worldwide, just as metallogenic models developed in other countries have provided the means to look in a different manner at the Grenville orogen for mineral deposits. Collectively all the various approaches presented in this volume help us to revamp our way of looking at the mineral potential of the Grenville orogen.
16
Ruberti, Marcello, and Stefania Massari. "Are the World-Leading Primary Silver Mines Exhausting?" Sustainability 10, no. 8 (July 26, 2018): 2619. http://dx.doi.org/10.3390/su10082619.
Повний текст джерелаАнотація:
Silver is one of the rarest metals in nature and certainly among the most used ones, not only as precious good for financial investments but also for many industrial critical applications. Because it would be very difficult to analyze the situation regarding the future global availability of silver as a commodity in general, due to the necessity of a large amount of data which are hardly available, we have focused only on the mining production of primary silver. In particular, the study regards the activities of a sample consisting of twelve of the world top fifteen leading primary silver mines, which represent the 54% of the worldwide primary silver production and 16% of the global silver mining production. We have investigated the related exploitation state and trends of these twelve sites by elaborating their last ten-years statistics on silver production, ore grades, resources and reserves. The findings of this study, in short, are that the cumulative average silver ore grades, both in extracted mineral, resources and reserves, of the above selected mines, have decreased and also that the new mining fields (Dukat, San Bartolomé, Pirquitas, Saucito) have lower silver content indexes than the older ones.
17
Moyo, Funa, and Clifford Mabhena. "Harnessing Mineral Resources in Gwanda District of Zimbabwe: A Myth or a Reality?" International Letters of Social and Humanistic Sciences 38 (August 2014): 1–21. http://dx.doi.org/10.18052/www.scipress.com/ilshs.38.1.
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The article examines strategies of harnessing mineral resources for community empowerment, poverty reduction and infrastructure development in mining areas of Zimbabwe. Despite abundant mineral resources, the majority of Zimbabwean indigenous communities living close to the mines have limited access to directly or indirectly benefit from the mineral resources. Using a descriptive survey to collect data, this research article gives a strong proposition on how the Indigenisation and Economic Empowerment Act can be used as a vehicle of harnessing mineral resources. The article argues that pro poor mining policies that ensure the harnessing of mineral resources for community empowerment, poverty reduction and infrastructure development are paramount. The article further argues that the Indigenous and Economic Empowerment Act needs to be harmonised with other sector legislation in the country. The article concludes that the development of infrastructure and provision of public utilities such as electricity, water, establishing micro-credit to small and medium enterprises and implementing broad-based indigenisation policies are some of the strategies of improving rural livelihoods. Similarly direct and indirect linkages between the mining sector and local economy could be enhanced through the provision of food supply to the mine, manufacture of mining inputs, provision of security services and supply of labour by the local community. The article recommends that the harmonisation of legislation that has an effect on harnessing of mineral resources by local communities will ensure community empowerment, poverty reduction and infrastructure development.
18
Liu, Bing, Lai Jun Lu, and Jia Tong Zhang. "Two Quantity Estimation Models of Mineral Resource Potential Area." Applied Mechanics and Materials 373-375 (August 2013): 2292–98. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.2292.
Повний текст джерелаАнотація:
The estimation of the mineral resources area (target area) number is an important part of mathematical geology. Total resource depends not only on the scale of the single target mineralization but is also proportional to the number of target area. In this paper, the target area quantitative algorithm was studied based on the domestic and abroad opinions. The Petersen capture model and Poisson model were introduced into the estimation of resource maternal capacity. In order to meet the requirements of the two models, sampling plan were re-designed and improved. Take 1/200,000 gold mines and metal (Cu, Ag, Pb, Zn) mineral resources prediction in Hebei Province as an example, two practical estimation models of the resource maternal capacity were established. Calculation shows that the results of Petersen capture model and Poisson model were similar and can be as an effective predictor of district resource capacity. Therefore, the bottleneck of regional resource total forecasting calculation method is solved.
19
Rafeeian, Nima, and Mohammad Taji. "Strategy Planning For the Mining Industry in Semnan Province (Iran) Using A Combined SWOT-AHP Approach." International Journal of Advanced Research in Engineering 3, no. 2 (June 24, 2017): 9. http://dx.doi.org/10.24178/ijare.2017.3.2.09.
Повний текст джерелаАнотація:
Abstract— In today's world, the type of investment, prioritization and scheduling the extraction of mineral resources due to the constraints of resources, technologies and human resources, etc. strongly requires a strategic planning appropriated in this area. In terms of quantity and quality, the resources and mines in Semnan province would be seen among the richest mineral resources in Iran. However, due to a scarcity of compiled strategic planning in the mining industry, this prominent province plays a small role in the country's economic developments. In this regard, the exploration and evaluation of the strategic factors and a formulation of strategies seems to be vital. In this study, the analysis and formulation of the demanding strategy have been done by applying the strategic management approach SWOT (Strengths, Weaknesses, Opportunities and Threats). Then the resulting strategies have been prioritized by using a hierarchical multi-criteria decision analysis called AHP (Analytic Hierarchical Process). Three strategies: creation of industrial clusters in the field of handicraft production with raw materials of mud, clay and gypsum panels (S3), joint mineral investments with the other mines of the province (S8), and the creation of groundwork for the mineral production cooperative companies, gained the highest priorities. Three strategies: updating the existing coke-making companies and constructing small coke-making and coal-washing units (S5), forming the specialized, industrial, mining, strategic and advisory committees in the Semnan Provincial Government to facilitate the local laws and encourage investments in mining (S7), and a greater engagement of private sectors with the government (activate the role of mining engineering and a maximum participation in decision-making related to the industry of the province) gained the least priority. At last, using prioritized strategies, some systematic planning is chosen strategically to suit the current situation, and to make possible a development and utilization of the high potential capacities in the mining industry which are already provides in Semnan province.
Index Terms— mining industry, SWOT Analysis, Hierarchical Analysis, Semnan province.
20
BIAŁECKA, Katarzyna, and Jan PRAŻAK. "STATIONARY MATHEMATICAL MODEL OF an AQUIFER AS A BASIC TOOL FOR MANAGEMENT OF GROUNDWATER RESOURCES IN THE CONCENTRATED OPENCAST MINING INDUSTRY IN THE HOLY CROSS MOUNTAINS." Biuletyn Państwowego Instytutu Geologicznego 471 (October 1, 2018): 7–14. http://dx.doi.org/10.5604/01.3001.0012.4735.
Повний текст джерелаАнотація:
Opencast mining industry very often extracts mineral resources below the groundwater table. Dewatering of excavations affects exploitable groundwater resources. It causes only temporal changes, but if they last several tens of years, local population is forced to modernize existing or even build new groundwater intakes. Mines discharge water into rivers, and local residents have problems with water supply. The municipality has the right not to agree for dewatering, but then it limits the activities of the mining industry. Therefore, it is very important to recognize not only the mining excavations affected by water inflow, but also the scope of hydrodynamic changes and their impact on groundwater intake facilities. The basic computational tool for prediction the effects of extraction of mineral resources below the water table should be a properly constructed mathematical model of a dewatered aquifer. The model should be stationary and should be used to prepare further forecasts for the assessment of damage caused by mining operations, depending on the progress in the exploitation of minerals. This will allow anticipating actions to cover possible losses in water supply to people, agriculture and the local industry. The authors present this problem and the attempts of such operations, based on the examples from the Gałęzice–Bolechowice–Borków and Łagów regions in the Holy Cross Mountains where numerous opencast mines of the Devonian limestones and dolomites are located.
21
Sah, Ram Bahadur, and Kabi Raj Paudyal. "Geological control of mineral deposits in Nepal." Journal of Nepal Geological Society 58 (June 25, 2019): 189–97. http://dx.doi.org/10.3126/jngs.v58i0.24604.
Повний текст джерелаАнотація:
Systematic information and in-depth knowledge of geological controls, mode of occurrences, distribution patterns and mineral association are very essential for exploring the new deposits and development of mineral resources of the country in general. In present study, an attempt has been made to clarify the geological controls of economic and sub-economic mineral deposits of Nepal. Investigation has shown that mineral deposits in Nepal Himalaya are controlled by particular geological conditions and tectonics. Till the date, economic potential of 63 mineral commodities from Nepal have been established by Department of Mines and Geology. Several economic to sub economic deposits of the country are explored and some are under mining process. Analysis of geological controls of above mentioned economic and sub-economic mineral deposits shows that they are either syngenetically or epigenetically confined to particular stratigraphic and tectonic units. These deposits are related in time and space to certain events of crustal movement representing different metallogenic epochs.
22
Wolberg, Donald L. "Fourth notice of transfer of specimens figured by Rousseau H. Flower." Journal of Paleontology 65, no. 2 (March 1991): 337. http://dx.doi.org/10.1017/s0022336000020631.
Повний текст джерелаАнотація:
This is the fourth in a series of notices recording the transfer of fossils described by Rousseau H. Flower (1913-1988) (Wolberg, 1990a, 1990b, 1990c). It was Rousseau's expressed wish that this material be reposited in the Smithsonian Institution/U.S. National Museum. Similarly, the New Mexico Bureau of Mines and Mineral Resources is concerned that the fossils be adequately cared for and readily available to those scientists with an interest in the material.
23
Moatshe, Onkgolotse G., Vallantino E. Emongor, and Patrick K. Mashiqa. "Genotype Effect on Proximate and Mineral Analysis of Safflower as a Green Leafy Vegetable." Journal of Agricultural Science 12, no. 11 (October 15, 2020): 260. http://dx.doi.org/10.5539/jas.v12n11p260.
Повний текст джерелаАнотація:
Two field trials were carried out at the Botswana University of Agriculture and Natural Resources Content Farm (59o24′S, 95o25′E and 993 m above sea level) in Southern Region of Botswana, to evaluate the effects of genotypes on proximate and mineral composition of safflower leaves. Five safflower genotypes (Kiama composite (local), Sina-PI-537598, Gila-PI-537692, PI-537636 and PI-527710) were evaluated in a randomized complete block design (RCBD) with three replications. During the rosette stage safflower leaves (both petiole and blade) were harvested, dried, and ground for analysis. The results showed that safflower genotypes significantly varied in the leaf proximate content of crude protein (24-28%), crude fibre (8-14%), moisture content (86-87%) and dry matter content (13-14%) in both winter and summer growing seasons. The genotype ‘Sina’ had the highest crude fibre content compared to other genotypes. The average leaf mineral content significantly (p < 0.05) varied from 2-3 mg g-1 phosphorus, 3-4 mg g-1 calcium, 5-6 mg g-1 sodium, 15-17 mg g-1 magnesium and 15-18 mg g-1 potassium. The Na:K and Ca:P ratios ranged between 0.18 and 3.41. All the safflower genotypes evaluated had sufficient nutritional content to be used as a green leafy vegetable for human consumption and food security.
24
Rudko, H. I., and Ye Yakovlev. "Post-mining of the Ukraine’s mining regions as a new direction for the environmentally safe use of mineral resources." Мінеральні ресурси України, no. 3 (November 12, 2020): 37–44. http://dx.doi.org/10.31996/mru.2020.3.37-44.
Повний текст джерелаАнотація:
The growth of market requirements for socio-economic and environmental parameters of mineral resources in most developed (“old”) mining areas (MA) of Ukraine has led to the closure of mines and quarries, including by the method of “wet conservation” (autorehabilitation uncontrolled flooding). This process is most actively developing in the MA of the Donbas, including in areas affected by armed conflict.
In most developed EU countries, the decommissioning of coal mines (Ruhr, Lorraine, Wales), which have large depths (up to 1,0–1,5 km) and area (thousand sq. km) of minefields, is a research and production complex of post-mining (PM), which is based on scientific and technical measures to prevent dangerous changes in the geological environment (GE) - subsidence of the earth’s surface, flooding of lands, release of explosive and toxic gases, limiting the leakage of polluted water. In addition, the PM provides for the transformation of part of the mine workings into a hydraulic filtration system of mine water retention at a depth of 250–350 m in order to prevent the flow of pollutants into freshwater horizons and river network, preservation of regional aquicludes, degassing of mining space. In general, the set of PM measures is aimed at maintaining the balance and protective potential of the GE as a mineral and landscape base of the biosphere.
In this regard, the article compares the protective potential of the GE of the Chornobyl accident zone and the Donbas region, as well as performs an expert assessment of the environmental protection potential of the PM in the leading MA of Ukraine.
It is shown that a new model of mineral resourses use, structure of geological exploration works, scientific substantiation of maximum allowable changes of GE at closing of “old” and formation of new MA, improvement of environmental monitoring based on GIS technologies and remote sensing of the Earth are needed.
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Wang, Song, Jia Ping Zheng, Xiao Pei Zhang, and Shun Ran Wang. "Discussion on the Types Attribution and Comprehensive Utilization of High-Alumina Clay Ore." Advanced Materials Research 807-809 (September 2013): 2209–14. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.2209.
Повний текст джерелаАнотація:
High-Alumina clay ore is the protective exploitation of mineral stipulated by the Ministry of Land and Resources. Due to its physicochemical properties and ore characteristics are quite different from current ore types --refractory clay mineral. It is usually taken as a general refractory clay mine of high-Alumina clay in practical applications, which leads to massive misuse and great waste of high-Alumina clay ore. This paper will redefine the attribuation of high-Alumina clay ore by analysing its differences and similarities with refractory clay minerals and bauxite mines in mineralogy, rock chemistry as well as physical structure, and present some advice on its comprehensive usage aiming at the existed problems in comprehensive development and utilization.
26
Jaiswal, Rohit. "Legal Frame Work for Exploitation of Beach Sand Mineral Resources: Historical Perspective and Action by Government of India for conservation." Journal of The Indian Association of Sedimentologists 38, no. 1 (June 30, 2021): 51–53. http://dx.doi.org/10.51710/jias.v38i1.149.
Повний текст джерелаАнотація:
India is bestowed with several Beach Sand Mineral (BSM) occurrences along its 7200 km long coastline. The exploitation/recovery of BSM resources is governed by various provisions of the Acts and Rules issued by the Government of India. Till 1998, the mining of BSM was reserved (excluding garnet and sillimanite) for the public sector only. Department of Atomic Energy (DAE), intending to maximize the value addition of BSM within the country, brought out a policy resolution, which allowed the private entities in mining and processing of BSM resources except for the mineral monazite. Mining and development of any mineral are governed by the Mines and Minerals (Development & Regulation) (MMDR) Act, 1957 and the rules made thereunder. MMDR Act, 1957 has undergone major amendments in 2015 and by virtue of the provisions under the Act, new rules were framed for the first time in the country, exclusively for grant of mineral concession in respect of atomic minerals. As per the provisions of a new rule, all BSM deposits (above threshold) come under the purview of the Government Company or Corporation owned or controlled by the Government. This paper deals with legal provisions for the exploitation of BSM resources and recent amendment by the Government of India for conserving these minerals of strategic importance, in the national interest.
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Liang, Weizhang, Suizhi Luo, and Guoyan Zhao. "Evaluation of Cleaner Production for Gold Mines Employing a Hybrid Multi-Criteria Decision Making Approach." Sustainability 11, no. 1 (December 28, 2018): 146. http://dx.doi.org/10.3390/su11010146.
Повний текст джерелаАнотація:
Implementing cleaner production (CP) is effective to resolve the contradiction between economic growth and environmental crisis. To avoid destroying the ecological environment in the exploitation process of mineral resources, CP has been developed in many gold mines to achieve the goal of sustainable development. Thus, this paper aims to propose a favorable approach to assess CP for gold mines. First, according to the specific characteristics of gold mines, an evaluation criteria system of CP is established. Meanwhile, considering the diversity of evaluation information, crisp numbers and probabilistic linguistic term sets (PLTSs) are adopted to indicate the quantitative and qualitative information, respectively. Subsequently, a modified experts grading method based on PLTSs is proposed to calculate the sub-criteria weights’ values. Following this, an extended Tomada de Decisão Interativa Multicritério (TODIM) method with hybrid evaluation values is presented to obtain the ranking order. Finally, the hybrid multi-criteria decision making (MCDM) approach is applied to a case of assessing CP for gold mines to demonstrate its feasibility. Furthermore, the robustness and advantages of this approach are justified by sensitivity and comparison analyses. The results show that the proposed approach is feasible to solve such kinds of evaluation problems with hybrid decision making information and can provide some managerial suggestions for government and enterprises.
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Jowitt, Simon M., and Brian A. McNulty. "Geology and Mining: Mineral Resources and Reserves: Their Estimation, Use, and Abuse." SEG Discovery, no. 125 (April 1, 2021): 27–36. http://dx.doi.org/10.5382/geo-and-mining-11.
Повний текст джерелаАнотація:
Editor’s note: The Geology and Mining series, edited by Dan Wood and Jeffrey Hedenquist, is designed to introduce early-career professionals and students to a variety of topics in mineral exploration, development, and mining, in order to provide insight into the many ways in which geoscientists contribute to the mineral industry. Abstract Resource and reserve estimation is a critical step in mine development and the progression from mineral exploration to commodity production. The data inputs typically change over time and reflect variations in geoscientific knowledge as well as the modifying factors required by regulation for estimating a reserve. These factors include mineral (ore) processing, metallurgical treatment of the ore, infrastructure requirements for mine and workforce, and the transportation of processed products to buyers; others that will affect the production of metals and/or minerals from a deposit include economic, marketing, legal, environmental, social, and governmental factors. All are needed by the mining industry to quantify the contained mineralization within mineral deposits that likely warrant the significant capital investment required to build a mine. However, these resource and reserve data are estimates that change over time due to unpredicted variations in the initial inputs. Paramount to the two estimates are the quality and accuracy of the geologic inputs and the communication of these to the professionals tasked with making each estimate. Geostatistical processing of the grade of the resource has become a dominant element of the estimation process, but this requires transparent and informed communication between geologists and mining engineers with the geostatistician responsible for mathematically processing the grade data. Regulatory constraints also mean that estimated resources and reserves seldom capture the full extent of a mineral deposit. Similarly, co- and by-product metals and minerals that are commonly produced by mines may not be captured by resource and reserve estimates because of their limited economic contribution. This suggests that reporting standards for co- and by-products—particularly for the critical metals that may have a sharp increase in demand—need improvement. Finally, the importance of these data to the mining industry is such that informing investors and the broader public about the nature of resource and reserve estimates, and the meaning of associated terminology, is also essential when considering the global metal and mineral supply, and the role of mining in modern society.
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Matyukha, Vоlоdуmуr. "GRAPHOANALYTICAL METHODOLOGICAL APPROACH TO THE COST ESTIMATION OF MINERAL DEPOSITS." Environmental Economics and Sustainable Development, no. 6(25) (2019): 71–75. http://dx.doi.org/10.37100/2616-7689/2019/6(25)/11.
Повний текст джерелаАнотація:
The importance of cost estimation of mineral resources in modern economic theory is noted in the article. It is noted that all currently existing methodical and methodological approaches to the valuation of minerals by their economic nature are in fact an analysis of the economic feasibility of realization of investment projects for the development of deposits, which actually answers the question: is the investment project for the development of the field economically viable. Based on the analysis of literary sources, it is established that at the present stage of development of the world economy, the interest in the economic evaluation of the efficiency of development of mineral resources is not waning. However, methodological approaches are different and there is still no unity in them. Experts point out that the current methods require improvement due to the low accuracy of calculations, since the size of the cost estimate depends on the amount of rental payments for the use of mineral resources in mining and the starting price of the sale of a special permit for the development of deposits at auction. For the first time in the economic theory economics, a graphoanalytic method for the cost estimation of mineral deposits has been proposed. The features of this methodological approach based on integral calculus, including the integration of continuous functions, as well as the method of discounting cash flows with simultaneous consideration of the life cycle scheme of deposits, namely mining and geological conditions of mining are opened. The step-by-step sequence of realization of the proposed method is resulted. It is stated that this approach will allow to obtain a more exact cost estimate of a deposit or subsoil by taking into account the following factors: the life of the deposit, the market conditions of the mineral resources, capital and current expenses connected with extraction of minerals and costs of the subsoil user in the post-mining a period of time related to the closure of mines and quarries and the reclamation of disturbed lands formed during the extraction of minerals.
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Lin, Fanqiang, Xuben Wang, Kecheng Chen, Depan Hu, Song Gao, Xue Zou, and Cai Zeng. "The development and test research of a multichannel synchronous transient electromagnetic receiver." Geoscientific Instrumentation, Methods and Data Systems 7, no. 3 (July 25, 2018): 209–21. http://dx.doi.org/10.5194/gi-7-209-2018.
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Abstract. As a result of the drastic reduction in shallow mineral resources, the exploitable potential and reserves of proven mines are insufficient, and the mineral resources in deep ground need to be more explored in a more refined way. There are some disadvantages of the existing instruments, such as few channels and slow sampling rate. Therefore, a multiparameter transient electromagnetic instrument with synchronous receiving has been developed and tested. The instrument is composed of two controllers – embedded controller and programmable logic controller – which can provide a diversified information combination for follow-up information processing. Under the grounding electrode source emission mode, the real-time synchronous transient electromagnetic acquisition system of six channels is achieved with a sampling rate of 128 000 samples per second (SPS). The data acquired by the six channels is recorded in the full-time range of the time domain. Furthermore, experiments were carried out in the laboratory, open areas, and actual mine. Through data analysis, the measured data curves of the mining area are highly consistent with the existing geochemical exploration curves and geological profile.
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Popiołek, Edward, Zdzisław Kłeczek, Zygmunt Niedojadło, Ryszard Hejmanowski, Wojciech Skobliński, Paweł Sopata, Tomasz Stoch, and Artur Wójcik. "An Analysis Of The Interaction During Simultaneous Use Of Copper Ore And Salt Deposits In The LGOM Mines With Regard To Displacement And Deformation Of Rock Mass." Archives of Mining Sciences 60, no. 2 (June 1, 2015): 535–48. http://dx.doi.org/10.1515/amsc-2015-0035.
Повний текст джерелаАнотація:
Abstract Excavation of the two bedded deposits of mineral resources in a small vertical distance may cause additional increased mining risks (rock mass deformation, rock bursts and mining tremors, threat to land surface). This paper considers the impact of excavation of the copper ore deposit on the bed of rock salt located above it and the opposite, in terms of displacements and deformations. We used the theoretical models of processes verified by previous in situ observations in the mines of the Legnica-Głogów Copper Mining District. We analysed the potential for reducing the risks, among others, through coordination of mining works.
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Proenza, Joaquín A., Lisard Torró, and Carl E. Nelson. "Mineral deposits of Latin America and the Caribbean. Preface." Boletín de la Sociedad Geológica Mexicana 72, no. 3 (November 28, 2020): A250820. http://dx.doi.org/10.18268/bsgm2020v72n3a250820.
Повний текст джерелаАнотація:
The region that encompasses Latin America and the Caribbean is a preferential destination for mining and mineral exploration, according to the Mineral Commodity Summaries 2020 of the US Geological Survey (https://www.usgs.gov/centers/nmic/). The region contains important resources of copper, gold, silver, nickel, cobalt, iron, niobium, aluminum, zinc, lead, tin, lithium, chromium, and other metals. For example, Chile is the world’s largest copper producer and the second largest lithium producer. Brazil is the world’s leading niobium producer, the second largest producer of iron ore, and the third-ranked producer of tantalum. Cuba contains some of the largest reserves of nickel and cobalt in the world, associated with lateritic Ni-Co deposits. Mexico is traditionally the largest silver producer and contains the two largest mines in this commodity and, along with Peru, Chile, Bolivia and Argentina, accounts for more than half of the total amount of global silver production. The region also hosts several world-class gold mines (e.g., Pueblo Viejo in the Dominican Republic, Paracotu in Brazil, Veladero in Argentina, and Yanacocha in Peru). Also, Bolivia and Brazil are among the world’s leading producers of tin. The region hosts a variety of deposit types, among which the most outstanding are porphyry copper and epithermal precious metal, bauxite and lateritic nickel, lateritic iron ore from banded iron-formation, iron-oxide-copper-gold (IOCG), sulfide skarn, volcanogenic massive sulfide (VMS), Mississippi Valley type (MVT), primary and weathering-related Nb-bearing minerals associated with alkaline–carbonatite complexes, tin–antimony polymetallic veins, and ophiolitic chromite. This special issue on Mineral Deposits of Latin America and the Caribbean in the Boletín de la Sociedad Geológica Mexicana contains nineteen papers. Contributions describe mineral deposits from Mexico, Panama, Cuba, Dominican Republic, Colombia, Venezuela, Ecuador, Chile, and Argentina. This volume of papers covers four mineral systems (mafic-ultramafic orthomagmatic mineral systems, porphyry-skarn-epithermal mineral systems, iron oxide copper-gold mineral systems, and surficial mineral systems). This special issue also includes papers on industrial minerals, techniques for ore discovery (predictive modelling of mineral exploration using GIS), regional metallogeny and mining history.
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Proenza, Joaquín A., Lisard Torró, and Carl E. Nelson. "Mineral deposits of Latin America and the Caribbean. Preface." Boletín de la Sociedad Geológica Mexicana 72, no. 3 (November 28, 2020): P250820. http://dx.doi.org/10.18268/bsgm2020v72n3p250820.
Повний текст джерелаАнотація:
The region that encompasses Latin America and the Caribbean is a preferential destination for mining and mineral exploration, according to the Mineral Commodity Summaries 2020 of the US Geological Survey (https://www.usgs.gov/centers/nmic/). The region contains important resources of copper, gold, silver, nickel, cobalt, iron, niobium, aluminum, zinc, lead, tin, lithium, chromium, and other metals. For example, Chile is the world’s largest copper producer and the second largest lithium producer. Brazil is the world’s leading niobium producer, the second largest producer of iron ore, and the third-ranked producer of tantalum. Cuba contains some of the largest reserves of nickel and cobalt in the world, associated with lateritic Ni-Co deposits. Mexico is traditionally the largest silver producer and contains the two largest mines in this commodity and, along with Peru, Chile, Bolivia and Argentina, accounts for more than half of the total amount of global silver production. The region also hosts several world-class gold mines (e.g., Pueblo Viejo in the Dominican Republic, Paracotu in Brazil, Veladero in Argentina, and Yanacocha in Peru). Also, Bolivia and Brazil are among the world’s leading producers of tin. The region hosts a variety of deposit types, among which the most outstanding are porphyry copper and epithermal precious metal, bauxite and lateritic nickel, lateritic iron ore from banded iron-formation, iron-oxide-copper-gold (IOCG), sulfide skarn, volcanogenic massive sulfide (VMS), Mississippi Valley type (MVT), primary and weathering-related Nb-bearing minerals associated with alkaline–carbonatite complexes, tin–antimony polymetallic veins, and ophiolitic chromite. This special issue on Mineral Deposits of Latin America and the Caribbean in the Boletín de la Sociedad Geológica Mexicana contains nineteen papers. Contributions describe mineral deposits from Mexico, Panama, Cuba, Dominican Republic, Colombia, Venezuela, Ecuador, Chile, and Argentina. This volume of papers covers four mineral systems (mafic-ultramafic orthomagmatic mineral systems, porphyry-skarn-epithermal mineral systems, iron oxide copper-gold mineral systems, and surficial mineral systems). This special issue also includes papers on industrial minerals, techniques for ore discovery (predictive modelling of mineral exploration using GIS), regional metallogeny and mining history.
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CLARY, RENEE M. "THE ROYAL SCHOOL OF MINES: HENRY DE LA BECHE’S CONVERGENCE OF PROFESSIONALIZATION AND PUBLIC ADVOCACY." Earth Sciences History 39, no. 2 (November 12, 2020): 291–304. http://dx.doi.org/10.17704/1944-6187-39.2.291.
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ABSTRACT Several European countries instituted mining schools in the late 1700s, including France, Germany, Hungary, and Russia. However, since England’s mining industry was privatized with little government involvement, Great Britain was decades behind with the creation of a school of mines. In 1835, Henry De la Beche (1796–1855) became the first director of the Ordnance Geological Survey, precursor to the British Geological Survey. De la Beche used this position to advance geology’s professionalization, which would include the establishment of an applied geology museum, mining records storehouse, and a school of mines. The Museum of Economic Geology, displaying the country’s mineral resources and geology, was De la Beche’s first success. Founded in 1835, it opened to the public in 1841. The Mining Records Office opened in 1840 as a repository for plans of working and abandoned mines. An early public advocate for workers’ safety, De la Beche lobbied for government inspections of collieries, immediate reporting of mining accidents, and proper plans of mines. The School of Mines was De la Beche’s third accomplishment in geology’s professionalization. As an outgrowth of the museum, it was formally opened in 1851 along with the larger Museum of Practical Geology, the Museum of Economic Geology’s successor. De la Beche’s intent for the School of Mines—instruction as a combination of science and practice—seems modern in its approach. In 1843, funding was allocated for lectures on the practical applications of geology, but these were not implemented until the School of Mines opened in 1851. In his effort to educate everyone—from miner to mine owner—De la Beche transcended social boundaries and supported open, public lectures. As a result, some considered him a class traitor. De la Beche used his position to advocate for advancement of the mining industry to include miner safety and public education. Therefore, while the Royal School of Mines emerged later than many of its European counterparts, it was part of a systematic professionalization of geology, coupled with education and a public advocacy for mining participants.
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Lamparska, Marzena. "The issues of drainage of discussed mines in the Katowice conurbation, Poland." Environmental & Socio-economic Studies 1, no. 1 (March 1, 2013): 17–21. http://dx.doi.org/10.1515/environ-2015-0003.
Повний текст джерелаАнотація:
Abstract The Katowice conurbation is situated in the Upper-Silesian Coal Basin, in a region which had high rate of water inflow in the pre-mining period. In order to make deposits of mineral resources accessible, it was, and still is, necessary provide mines with a draining system, which now reaches as deep as 1200 m. The area of the depression sink which was thus created is about 1200 km2. Currently, all metal ore mines within the conurbation, as well as part of coal mines, have been closed down, but water which flows into them is still pumped out due to the legal obligation to protect neighbouring operating mines. After the operation and drainage of mines cease, water coming to abandoned excavations will begin restoring static reserves in the orogen, which, depending on hydrological conditions, will take between several and a few dozen years. As the level of underground water rises, the process of subsidence of old shallow mining excavations will intensify, and many depressions may appear in highly urbanized areas. In areas of mining subsidence, the underground water-table will be close to the surface, causing flooding of basements and building foundations, and the deepest subsidence basins will probably be completely flooded. Current location of operating mines on the northern and southern sides of the conurbation with the central belt of drained excavations is unfavourable for its sustainable development. A solution, which would make it possible for the conurbation to grow, would be to close down and flood the mines on the northern side as soon as their mining concessions expire, which will be in early 2020s. Then, the area would regain its original stability within a decade and all kinds of construction activities could be carried out there. That, however, requires authorities of municipalities to object to the extension of concessions for mines, which may be impossible to obtain due to fears of social discontent resulting from miners - residents of those municipalities - being made redundant.
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Gajera, Nikunj B., Arun Kumar Roy Mahato, and V. Vijay Kumar. "Status, Distribution, and Diversity of Birds in Mining Environment of Kachchh, Gujarat." International Journal of Biodiversity 2013 (April 17, 2013): 1–11. http://dx.doi.org/10.1155/2013/471618.
Повний текст джерелаАнотація:
Opencast mining is one of the major reasons for the destruction of natural habitats for many wildlife including birds. The Kachchh region belongs to the arid part of India and is one of the rich areas of mineral resources in the country. In the recent time and after the 2001 earthquake, mining and other developmental activities are increased, and as a result, the natural habitats of birds are disturbed and fragmented. So, this study was conducted to assess the impact of mining and associated activities on the diversity and distribution of birds. Birds were studied by surveying 180 transects along 9 zones around three selected major mines, and each zone is made in every 2 km radius from the mine. Based on the record, it was found that the density and diversity of birds are highest in zone 5 and lowest in zone 1 and zone 2, respectively. The result indicates that the diversity and abundance of birds were less in zones which are located close to the mines in comparison to the zones far from the mines. In conclusion, mining and its associated activities have some impacts on the diversity and distribution of birds in Kachchh region in India.
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Kłeczek, Zdzisław, Zygmunt Niedojadło, Edward Popiołek, Wojciech Skobliński, Paweł Sopata, Tomasz Stoch, Artur Wójcik, and Dagmara Zeljaś. "Mining Hazards Analysis with Simultaneous Mining Copper Ores and Salt Deposits in LGOM (Legnica-Głogów Copper Belt) Mines with Regard to Dynamic Influences." Archives of Mining Sciences 61, no. 3 (September 1, 2016): 553–70. http://dx.doi.org/10.1515/amsc-2016-0040.
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Abstract In the case of locating two bedded deposits of different mineral resources in a small vertical distance, additional or increased mining hazards can occur (deformations of the rock mass, crumps and mining shocks, hazards to the land surface). This paper has thoroughly examined the impact of exploitation of the lower-located deposit of copper ore on the higher-located deposit of salt as well as the reverse situation as regards the dynamic phenomena, being the greatest lithospheric hazard in LGOM. At the same time theoretical models of processes were applied, verified by previous observations in situ in mines of Legnica-Głogów Copper Belt.
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Mpofu, Charles, Thabiso John Morodi, and Johan Petrus Hattingh. "Governance and socio-political issues in management of acid mine drainage in South Africa." Water Policy 20, no. 1 (August 31, 2017): 77–89. http://dx.doi.org/10.2166/wp.2017.068.
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Abstract The water resources in South Africa are threatened by current and past mining practices such as abandoned and closed mines. While mining is considered valuable for its contribution to this country's gross domestic product, its polluting effects on water and land resources have been criticised as unsustainable. Acid mine drainage (AMD) is one specific public health and ecological issue that has stirred debates in political and social circles in this country. This paper examines the scalar politics and other related dimensions of water and AMD governance, thereby revealing evidence of deep-rooted challenges regarding the governance of water and mineral resources. The specific focus is on the socio-political context of labour laws and Black Economic Empowerment and the decision-making processes adopted by government. Thus, this paper has implications for the improvement of environmental governance and decision-making strategies and the adoption of a national strategy for adequately addressing AMD and related policy issues.
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Naworyta, Wojciech. "The need for verification of the Polish lignite deposits owing to development and nature conservation protection on land at the surface." Environmental & Socio-economic Studies 4, no. 4 (December 1, 2016): 24–31. http://dx.doi.org/10.1515/environ-2016-0021.
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AbstractPoland is a country rich in lignite. The area where the lignite occurs occupies approx. 22% of the total surface area of the country. Geological resources of Polish lignite deposits are estimated at 23.5 billion Mg, but in the majority (69%) the accuracy of their identification is poor. Nevertheless the amount of coal in Polish deposits allows - at least in theory - for mining and energy production at the current level for hundreds of years to come. It is an important raw material for the energy security of the country both currently and in the future. Because the vast majority of Polish and foreign mines use an open pit method for lignite extraction the actual amount of mineral available for the extraction depends not only on the properties of the deposit but to a large extent on the method of development of the surface land above the deposit, as well as on the sensitivity of the environment in the vicinity of any future mines. After careful analysis it can be stated that only a few of the lignite deposits may be subject to cost-effective mining operations. These deposits should be subjected to special protection as a future resource base which will ensure the energy security of the country. Some examples of domestic deposits have been presented where due to the conflict resulting from the development of the area should be deleted from the Balance Sheet of Mineral Deposits because their exploitation is irrational and uneconomic. Keeping such deposits in the Balance Sheet, and the use of large numbers in the context of their resource base leads to an unwarranted sense of wealth which consequently does not encourage the protection of these deposits which may actually be subject to rational exploitation in the near future. In summary there is a need to find a compromise in order to adequately protect all natural resources including mineral deposits.
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Geenen, Sara, and Klara Claessens. "Disputed access to the gold sites in Luhwindja, eastern Democratic Republic of Congo." Journal of Modern African Studies 51, no. 1 (February 25, 2013): 85–108. http://dx.doi.org/10.1017/s0022278x12000559.
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ABSTRACTIn a context of increased competition over natural resources, large-scale investors are showing renewed interest in eastern Congo's mineral resources. At the local level this is resulting in fierce disputes over access to land and to mining sites. This article offers an empirical study of access in Luhwindja, where a multinational mining company has recently begun to exploit gold. We first sketch the context, examining the overlapping legal fields and analysing how various actors gain and control access to the gold mines. Next we study how the arrival of Banro Corporation in Luhwindja has altered power relations at the local level. Looking more specifically at the displacement of artisanal miners and the resettlement of local communities, we demonstrate how the company, local elites and the local population have engaged in a complex struggle for access.
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Lesin, Yury, Vyacheslav Gogolin, Elena Murko, Sergey Markov, and Jurgen Kretschmann. "The Choice of Methods of Quarry Wastewater Purifying." E3S Web of Conferences 41 (2018): 01039. http://dx.doi.org/10.1051/e3sconf/20184101039.
Повний текст джерелаАнотація:
The negative effect made by mining enterprises on the natural environment has complex origination. The intensive pollution is observed because of the influence of mineral deposits open-pit mining on the atmosphere, water resources and landscape complexes. Complex processes of environmental anthropogenic changes caused by open pits’ operations have brought to light the problem of surface water pollution near large mining segments. Industrial wastewater of mining enterprises has a significant impact on the natural environment. In connection with the continuous and significant increase in the volume of mining, the amount of wastewater from mines, quarries and processing plants is constantly increasing. The main components of wastewater from operating mining enterprises are mine (quarry) waters, as well as runoff from atmospheric waters polluted by water erosion of dumps and mineral stacks. The paper describes the possible ways of quarry wastewater purifying – using hydrocyclones and artificial filtering arrays made from overburden rock.
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Zaitseva, Nina V., Olga Yu Ustinova, Vadim B. Alekseev, Tatyana S. Ulanova, Elena M. Vlasova, and Alexsandr E. Nosov. "Peculiarities of production-related diseases in miners employed at deep mining of chromic ores." Occupational Health and Industrial Ecology, no. 10 (February 18, 2019): 6–12. http://dx.doi.org/10.31089/1026-9428-2018-10-6-12.
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Deep mining is widely spread in Russia; therefore, it is truly vital to determine how labor resources in the branch can be preserved. Adverse working conditions cause elevated risks of not only occupationally induced diseases, but also production-related ones, make medical and social consequences of such diseases even worse, and result in a decrease in overall labor potential of a society. Miners’ working conditions are ones of the most adverse. When participating in technological processes, workers are exposed to a set of adverse and dangerous industrial factors, both common for any deep mining and specific ones related to a type of mineral resources which are mined. We performed a complex assessment of working conditions existing in deep mining of chromic ores in order to detect risks of chronic diseases for miners as well as to determine an extent to which such diseases were production-related. We revealed that working conditions for miners involved in chromic ores mining were associated with joint negative effects exerted by physical and chemical factors of the working process; as per this combination of factors, they can be assigned into “adverse working conditions with 3–4 hazard degree” category. Workers involved in deep mining at chromic mines ran 1.5–5.2 times higher relative risks of cardiovascular system diseases, respiratory system diseases, endocrine system diseases, and hearing organs diseases, than personnel employed at mines but dealing with production processes on the surface. Nervous and respiratory system diseases, endocrine pathologies, and hearing organs diseases in miners employed at chromic mines were to a great extent production-related while cardiovascular system diseases less significantly depended on industrial factors.
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Jaiyeoba, Olumide Olasimbo, and Jane Iloanya. "E-learning in tertiary institutions in Botswana: apathy to adoption." International Journal of Information and Learning Technology 36, no. 2 (March 22, 2019): 157–68. http://dx.doi.org/10.1108/ijilt-05-2018-0058.
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Purpose The purpose of this paper is to investigate the nomological web between technology acceptance model metrics such as perceived ease of use, perceived usefulness, perceived web privacy of e-learning resources on attitude and behavioural intention of virtual platform for learning by university students. Design/methodology/approach The study employed a quantitative method by using self-administered survey instruments among university students who have at least one year of e-learning experience. Psychometric nomenclature of survey instruments was conducted and the reliability and validity metrics of perceived ease of use, perceived usefulness, extent of e-learning use, perceived web-based privacy, attitude and behavioural intentions meet the threshold as established in extant literature. Correlation and regression analysis were conducted to explicate hypothesised relationship. Findings The study found out that e-learning use, perceived usefulness and attitude are associated with learners behavioural intentions, while perceived ease of use and perceived web-based privacy are not significantly associated with behavioural intentions of e-learners in Botswana. The findings further showed in the regression analysis that the extent of e-learning use, perceived usefulness, perceived ease of use and attitude are significantly related to behavioural intentions, while the perceived web-based privacy is not significantly related to behavioural intentions. Practical implications The e-learning processes thus help outline the effective marketing strategies and promotions or nichemanship among university students which help uncover the influence of innovation metrics on e-learning among the youth target audience in Botswana as the country seeks to achieve a paradigm shift from mineral-led economy to knowledge-based society. Originality/value Despite the popularity of e-learning approach as explicated in extant literature, the extent to which such platform is accepted with respect to security and reliability most especially in an emerging economy like Botswana is ambiguous. This study thus seeks to establish the extent to which e-learning in Botho University and Botswana Open University creates a platform for intention to use as regards technological acceptance parsimonious model in Botswana.
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Li, Shule, Jingjing Yan, Qiuming Pei, Jinghua Sha, Siyu Mou, and Yong Xiao. "Risk Identification and Evaluation of the Long-term Supply of Manganese Mines in China Based on the VW-BGR Method." Sustainability 11, no. 9 (May 10, 2019): 2683. http://dx.doi.org/10.3390/su11092683.
Повний текст джерелаАнотація:
Manganese is mostly used in the iron and steel industry and serves as an important metal mineral in the national economy. It is difficult to substantially increase the output of China’s manganese ore because it is of low grade and high impurity content. However, as a large consumer in the world, it is very important to ensure the long-term stable supply of this mineral. Collecting historical data on manganese ore in China over the past 20 years, we identified and evaluated risks during the whole process of production, supply, consumption, reserves, and trade of resources using the Volkswagen and German Federal Institute for Geosciences and Natural Resources (VW-BGR) method by selecting nine indicators: current market equilibrium, market price volatility, Reserve/production ratio, import dependence, import concentration, country risks, country concentration and future supply and demand trend. Furthermore, we assessed its economic importance by calculating the contribution of manganese ore involved in different value chains. It shows the same downward trend both in manganese ore consumption and economic importance, and the future demand of manganese ore will slow down, and the global supply will exceed demand. Based on the comprehensive evaluation of supply and demand trends in the past and future, it was concluded that the current market balance, import dependence and country concentration risks are the main driving factors for the supply risk of manganese ore in China, showing higher supply risk than that of the other factors; the resource and geostrategic risks are moderate, and may significantly reduce the supply risk if effective measures are implemented. As per the aforementioned analysis, to address the risk of supply interruption, this study provides some suggestions and measures, such as strengthening resource reserves and low-grade manganese ore utilization at home, actively exploring foreign markets, exploiting overseas resources, expanding import channels, extending the industrial chain, and adopting equity mergers and acquisitions abroad.
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Ma, Xiao Long, Guang Zhang, Qing Guo Ren, and Xiu Ling Jiang. "Rational Research of Deep Concave Open-Pit Slope Angle of Lower Part." Applied Mechanics and Materials 716-717 (December 2014): 248–51. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.248.
Повний текст джерелаАнотація:
With the rapid advance of industrialization,the consumption of mineral resources is increasing.For open pit mine,many of them went into deep mining.The current,widespread adoption of open pit slope angle makes deep concave mining has a huge stripping ratio.So many mines in trouble,on the premise of guarantee the deep sunken open pit slope stability increase slope toe can bring huge economic benefits,and a lot of research work has been done.This paper describes the factors affecting the stability of open-pit mine slope,the slope rock mass stress analysis,to calculate the lower steep slope economic benefits,puts forward reasonable suggestions the future research direction of the slope stability of open-pit mine.
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Skipochka, Serhii. "Conceptual basis of mining intensification by the geomechanical factor." E3S Web of Conferences 109 (2019): 00089. http://dx.doi.org/10.1051/e3sconf/201910900089.
Повний текст джерелаАнотація:
The goal of the work was to develop a concept of intensification of mining operations, taking into account geomechanical processes occurring in the “rock massif – mining workings – support and protective structures” system. The article is the result of theoretical and experimental research materials analysis and synthesis, carried out for the conditions of coal, non-metallic and iron-ore mines. Positive and negative geomechanical processes and phenomena, occurring during intensification of mining operations, have been substantiated. A set of technical and technological solutions to eliminate the negative phenomena associated with high mining rates development of mineral resources has been proposed. Recommendations, presented in this article, will significantly reduce the conditionally fixed costs of mining production and improve miner’s safety.
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Campmajo, Pierre, Christine Rendu, Denis Crabol, Delphine Bousquet, and Noémie Luault. "The mineral and vegetal resources of Eastern Cerdanya. Wood, mines, lime kilns, charcoal and ore processing sites. The contribution of archeology." Treballs d'Arqueologia 21 (December 22, 2017): 65. http://dx.doi.org/10.5565/rev/tda.60.
Повний текст джерела
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Wang, Lai-Wang, Thanh-Tuyen Tran, and Nhu-Ty Nguyen. "An Empirical Study of Hybrid DEA and Grey System Theory on Analyzing Performance: A Case from Indian Mining Industry." Journal of Applied Mathematics 2015 (2015): 1–15. http://dx.doi.org/10.1155/2015/395360.
Повний текст джерелаАнотація:
India, which has long been recognized as a well-endowed nation in natural mineral resources, is a major minerals producer. According to the report of Indian Ministry of Mines 2013, Indian mining and metals sector ranked the fourth among the mineral producer countries, behind China, United States, and Russia and had in fact led the economy into recovery from the global financial crisis. Since this industry has turned into a significant issue, this paper attempts to rank the performance of 23 Indian mining and metal companies and to evaluate and measure the productivity change of these sectors during different time periods (2010–2014). Besides, the authors would like to choose one advanced model of MPI to see the performance of these companies in the past-present period and the 4-year future period (2015–2018) by using forecasting results of Grey system theory. The results revealed that from the past to future period the National Mineral Development Corporation, Hindalco Industries Limited, and Coal India always keep their highest best rankings among 23 DMUs regarding performance scores. This study contributes better insights of Indian mining industry as it is the core of the economy.
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Hartzer, Suzette, and Willemien Du Plessis. "The Liability of Historical Mine Authorisation Holders for Rehabilitation of ‘Old Order Mine Dumps’." Southern African Public Law 29, no. 2 (December 18, 2017): 469–93. http://dx.doi.org/10.25159/2522-6800/3648.
Повний текст джерелаАнотація:
Mine dumps or tailings (i.e. ‘mine waste’) created by mining activities are some of the main environmental impacts of mining. Historically little or no regard was given to the environment while planning mine dumps, since planning was based on minimum cost, the availability of land and the safety of underground workings.Mine dumps continue to cause water and air pollution when abandoned without being rehabilitated. Abandoned mines and their dumps are common features of the South African landscape. Section 46 of the Mineral and Petroleum Resources Development Act 28 of 2002 (MPRDA) provides that the state is responsible to rehabilitate abandoned mines if the owner is deceased, cannot be traced, ceased to exist or has been liquidated. Rehabilitation of these mines has extensive financial consequences for the state and indirectly to the taxpayer.The aim of this article is to determine the responsibility of historical mining right holders for such rehabilitation. ‘Historic polluters’ refer to mining companies who caused pollution and environmental degradation due to mining activities before the Minerals Act came into force in 1991. Also to be addressed in this article is the question whether owners of tailings created through an authorisation issued in terms of the now repealed Minerals Act or prior legislation (old order dumps) would be able to escape their rehabilitation obligations or not. Reference will be made to the new proposed amendments to the MPRDA as well in addressing the question.
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Wang, Xunhong, Xiaowei Gu, Zaobao Liu, Qing Wang, Xiaochuan Xu, and Minggui Zheng. "Production Process Optimization of Metal Mines Considering Economic Benefit and Resource Efficiency Using an NSGA-II Model." Processes 6, no. 11 (November 19, 2018): 228. http://dx.doi.org/10.3390/pr6110228.
Повний текст джерелаАнотація:
The optimization of the production process of metal mines has been traditionally driven only by economic benefits while ignoring resource efficiency. However, it has become increasingly aware of the importance of resource efficiency since mineral resource reserves continue to decrease while the demand continues to grow. To better utilize the mineral resources for sustainable development, this paper proposes a multi-objective optimization model of the production process of metal mines considering both economic benefits and resource efficiency. Specifically, the goals of the proposed model are to maximize the profit and resource utilization rate. Then, the fast and elitist Non-Dominated Sorting Genetic Algorithm (NSGA-II) is used to optimize the multi-objective optimization model. The proposed model has been applied to the optimization of the production process of a stage in the Huogeqi Copper Mine. The optimization results provide a set of Pareto-optimal solutions that can meet varying needs of decision makers. Moreover, compared with those of the current production indicators, the profit and resource utilization rate of some points in the optimization results can increase respectively by 2.99% and 2.64%. Additionally, the effects of the decision variables (geological cut-off grade, minimum industrial grade and loss ratio) on objective functions (profit and resource utilization rate) were discussed using variance analysis. The sensitivities of the Pareto-optimal solutions to the unit copper concentrate price were studied. The results show that the Pareto-optimal solutions at higher profits (with lower resource utilization rates) are more sensitive to the unit copper concentrate prices than those obtained in regions with lower profits.