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Статті в журналах з теми "Mines and mineral resources – Botswana"
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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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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
Повний текст джерелаДисертації з теми "Mines and mineral resources – Botswana"
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Mengwe, Moses Seargent. "Towards social impact assessment of copper-nickel mining in Botswana." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1443.
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This research study is more of an initiative towards Social Impact Assessment of copper-nickel mining in Botswana. The specific objectives of the study were centred on the assessment of the social impacts of copper-nickel mining in Botswana from the initial mining stage of exploration, surveying and mine site development to mine closure. The study was carried out under the broad hypotheses that mining influences population movement that impact on areas of mining; mining activities have both economic benefits and deleterious social impacts on the local communities found in the areas where mining is taking place; and mine closure has far reaching socio-economic, investment and developmental implications over and above the obvious interests of project owners. To achieve the broad aim as summarised above, the research study used a multi-disciplinary methodology and approach that required several kinds of expertise and sources of information. Hence it used both primary and secondary sources centred on interactive informative interviews, site visits and observations, questionnaires, census data records, mining companies’ publications, published textbooks and journal articles. The research study comprised of three different mines operated by three different mining companies in three varied socio-cultural and ethnic regions of Botswana. First was a detailed Social Impact Assessment of the initial phase of exploration, surveying and mine site development represented by Mowana mine project operated by African Copper in the rural areas of Dugwi and Mosetse. This case study yielded results showing that the social impacts of mining in the area are diverse and extensive. The findings suggest that the impacts relate not only to the possible economic benefits of foreign exchange, employment, the optimal use of available mineral resources and the possible development of Dugwi and Mosetse villages, but extends to the deleterious social impacts. The results also indicated that the social impacts have just begun in the two communities. Hence they point towards a possible disruption within the socio-cultural system of the local people if serious mitigation measures are not put in place; thus suggesting that the early stages of exploration and mine site development results in the most conflict between the mine and the local people. Second was a comprehensive Social Impact Assessment of Tati-Nickel Phoenix mining project in the peri-urban areas of Matshelagabedi and Matsiloje areas representing the mining stage of mine production and expansion. The results from this case study suggest that during vi mine production and expansion, many people were relocated. However, the overriding impression gained from the case study was Tati-Nickel Mining Company’s elaborate corporate policies that suggested good corporate governance and best practices that promote sustainable development. A notable milestone on good corporate governance and best practice that the other two case studies (mining company) could benchmark on is Tati-Nickel’s corporate social responsibility programme that has been designed to ensure that the communities within a fifty kilometre mine radius benefit from the mine. The results from the case study also distinguished the mining stage of production and expansion from the other two because it is associated with the deep entrenchment of the social impacts into the communities near to mining areas. Third was a detailed Social Impact Assessment on Bamangwato Concession Limited mine in the industrial town of Selebi-Phikwe. The case study represented the stage of mine closure. Through the findings of this case study, it became apparent that the economic dependence of Selebi-Phikwe on mining has seen the town developing into a mining town, increasing its vulnerability at mine closure. The results from the case study further suggest that mine closure will degrade the socio-economic sector of the town with ever far reaching socio-economic implications as many people lose their gainful employment, hence suggesting that a possible complete mine closure will be the most traumatic phase leading to major social conflict within the area. Thus the results suggest that at mine closure, the deleterious social impacts will overspill to other areas in Botswana with disastrous effects for the economy of the country. The results yielded through this study established in clear and passionate language that copper-nickel mining in Botswana influences population movements that lead to positive and negative impacts on the communities found in mining areas. Another major finding of the study is that copper-nickel mining activities have both economic benefits and deleterious social impacts on the local communities, hence the recommendation that the copper-nickel mining companies should embrace the concept of sustainable mining for sustainable development to avoid most of the negative impacts of their operations on the local communities.
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Haynes, Michael J. "Mining, dependence, and post-independence urbanisation in Botswana : sustainable development?" Master's thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/15422.
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Bibliography: leaves 187-197.Botswana has been considered as one of the few post-independence development successes in Africa. The country's recent status is attributable to the growth of the minerals sector, with diamonds and copper/nickel matte forming the basis of exports and government development revenues. Mining has not only been responsible for boosting export earnings, but has also stimulated most recent urbanisation, resulting in the some of the highest urban growth rates in sub-Saharan Africa. The problem of urban in-migration has been compounded by a bias in development expenditure, with the towns receiving a disproportionately large share of scarce resources. All new towns since independence have been established as service centres for the mines, with limited wider development occurring. Resultant vulnerability and instability in the urban sphere has been reflected in the case of Selebi-Phikwe, where a decline in the copper/nickel industry has threatened the future integrity of the town. That mining has not contributed towards development which is sustainable over the long terms calls into question, the resilience of Botswana's progress. A political-economic analysis of the development history of Botswana indicates a continuity between colonial neglect and the migrant labour system, and the current problems of dependence on the mining sector and external employment opportunities. The reasons for the dearth in diversified productive activity in mining towns in Botswana are related to an externally orientated development policy, with dependence on the world mineral markets. As the mining industry is based on the extraction of finite, non-renewable resources and is susceptible to fluctuations in mineral pricing, towns exclusively based on mining are latently unstable and have similarly finite lives. The problem is compounded by the lack of a local entrepreneurial class capable of stimulating the 'modern' sector which is related to the historical lack of an urban elite in the country. Given that there has been minimal associated development of productive opportunities outside of the primary sector in Selebi-Phikwe, the Government has instituted a crisis management strategy to deal with the situation. Proposals to diversify the economic base of Selebi-Phikwe are focused on attracting foreign investment, as a means of stimulating local, export-orientated industrialisation. As the incentives for locating in the town are primarily based on cheap, malleable, labour supplies, transnational investment is likely to be of a highly mobile nature and is unlikely to sustain employment and development in Selebi-Phikwe Certain conclusions are drawn from the experience of Selebi-Phikwe: Firstly, the problem of continuity in Selebi-Phikwe has historical roots indicating that short term panaceas are unlikely and that structural solutions are needed. Secondly, the town's fate holds important implications for the maintenance and support of the wider urban system in Botswana. Thirdly, expectations of indefinite economic prosperity have been generated in part, by continual Government emphasis on urban infrastructural development, something which is potentially problematic given the potential for urban discontinuity. A more rational evaluation of the urban sector in Botswana is required. With the precarious foundations of urbanisation in Botswana borne in mind, surplus revenues generated by mining should be channelled into rural employment creation rather than urban areas. An approach which treats the urban question in its entirety is required. There is thus a real need for a national development programme which integrates population and environmental policy with rural and urban sector planning, and which bases future development on the criteria of equity and sustainability.
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Mkonto, Strength. "Mining production process innovation : critical success factors to intersystem innovation at Jwaneng Mine Botswana." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2476.
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Thesis (MPhil (Information Science))--University of Stellenbosch, 2009.The strategic focus in many organisations is on innovation. This is driven by the need to grow and sustain shareholder value. Innovation takes the form of business process innovation, technological innovation and social innovation through acts of organisational restructuring. Innovation strategies have become a priority for the mineral resource sector. This is due to the constraints imposed on business growth by the finite nature of the mineral resources. The need for innovation brings two organisational aspects into focus. These are the organisational system constituted of structure, process, culture and people and the business system constituted of strategy, throughput activities, resource configurations, and product or service offerings. The two systems are in constant interaction. Innovation is therefore an emergent phenomenon dependent upon interaction of such systems. A Systems approach is required to analyse the complex interactions that take place between the two systems in organisations. The Jwaneng Mine Production Interface (JMPI) consists of several inter-dependent subsystems and it is therefore appropriate to analyse it as an intersystem. The research focuses on the factors that impact the business system and the organisation system. Innovation requires the development of competencies and capability in people constituting the organisation. The way people interact with technology can be a determining factor for innovation. Theories of technology and social systems provide an important insight on how social and technological systems can be organised for innovation. The developmental paths of an organisation are influenced by its culture and structure. Theoretical insights are used to gain deeper understanding of how innovation can be derived from organisational systems and business systems. To gauge the status of innovation activities in the JMPI, specially selected case studies are used for detailed analysis. In addition, appropriate benchmarks in similar and dissimilar industries are also utilised. The critical success factors to mining production innovation are found to be social, structural and technological in nature. Innovation is shown to cover the whole life cycle of the business product or service offering. The design for innovation therefore requires a holistic approach that incorporates strategy, organisational structures, technology, business processes, leadership and people.
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ROBERTS, MARK CULMER. "THEORY AND PRACTICE OF THE INTENSITY OF USE METHOD OF MINERAL CONSUMPTION FORECASTING (MINERAL, ECONOMICS)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187962.
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The intensity of use of a mineral is traditionally defined as the consumption (production plus net imports) of the mineral divided by gross national product. It has been proposed that this ratio of raw material input to gross economic output is a predictable function of per capita income and that the relationship is based on economic theory. Though the theory has never been clearly defined, the intensity of use method has been used to make long term forecasts. This dissertation formulates a theoretical model of the consumption of minerals and the resulting intensity of use which is used to test the validity of the traditional intensity of use measure and its forecasting ability. Previous justifications of the intensity of use hypothesis state that changes in technical efficiency, substitution rates among inputs, and demands are explained by per capita income, which, as it grows, produces a regular intensity of use pattern. The model developed in this research shows that the life of the goods in use, foreign trade of raw and final goods, prices, consumer preferences, technical innovations, as well as the above factors fully explain economic use, which is not simply a function of per capita income. The complete model is used to restate the traditional theory of intensity of use and to examine the sensitivity of traditional measures to changes in the explanatory variables which are commonly omitted. The full model demonstrates the parameters that must be examined when making a long term forecast. Regular intensity of use patterns are observed for many minerals in many nations. Setting aside the theoretical questions, the intensity of use method is often used to make long term projections based on these trends in intensity of use as well as the trends in population and gross national product. This dissertation examines the forecasting ability of the traditional intensity of use method and finds that it is not necessarily an improvement over naive consumption time trend forecasts. Furthermore, it is unstable for very long term projections.
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Cai, Wenlong. "ZERO-ONE PROGRAMMING ANALYSIS OF MINE PRODUCTION SCHEDULING PROBLEMS." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275401.
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Webber, R. C. W. "Determining the physical and economic impact of environmental design criteria for ultra-deep mines." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-07242006-105847/.
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King, Nelson Eng. "A DECISION SUPPORT SYSTEM FOR MINE EVALUATIONS." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275287.
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Gottschalk, Ethan Jermome. "Resource Debate in Southwest Alaska: The Bristol Bay Fishery and the Pebble Mine." The University of Montana, 2010. http://etd.lib.umt.edu/theses/available/etd-01222010-112628/.
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Bristol Bay, in Southwest Alaska, is the largest sockeye salmon fishery in the world. After an almost total collapse of salmon numbers in the mid 1970s, the salmon have returned and average in the tens of millions every year. The salmon play a vital economic, cultural, and subsistence role in the lives of the people who call Bristol Bay home. At present there is a plan to develop a low-grade, but substantial, mineral deposit that consists primarily of copper, gold, and molybdenum. The estimated value of the minerals present is more than $500 billion. This plan is known as the Pebble Project, and could involve an open-pit mine, a large area of block caving, as well as the creation of huge tailings ponds north of Lake Iliamna. The proposed site of the mine straddles a drainage divide that affects two major watersheds that feed the Bristol Bay fishery. A resource debate is at hand which places the development of the mineral deposit at odds with the health of the fishery.
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Fountaine, ELise V. "Computer aided underground mine design and drafting package." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182785891.
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Lavoie, Sébastien. "Géologie de la mine East-Sullivan, Abitibi-Est, Val-d'or, Québec /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2003. http://theses.uqac.ca.
Повний текст джерелаКниги з теми "Mines and mineral resources – Botswana"
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Seminar on Mineral Policy in Botswana (1988 Gaborone, Botswana). A Seminar on Mineral Policy in Botswana: Gaborone, February 1988. Gaborone, Botswana: Botswana Geoscientists Association, 1988.
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Lüdtke, G. Geophysical, geochemical, and geological investigations in the Ngami and Kheis areas of Botswana, 1980-1983: Final report (GS 17 Project, Mineral Exploration of the Kalahari). [Lobatse, Botswana]: Geological Survey Dept., 1986.
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Small, H. Beaumont. Mineral resources. Ottawa: Dept. of Agriculture, 1986.
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Buydos, John F. Mines, mining, and mineral resources. Washington, D.C: Science Reference Section, Science and Technology Division, Library of Congress, 1994.
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Sharma, Chandra K. Mineral resources of Nepal. Kathmandu, Nepal: Sangeeta Sharma, 1995.
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India, Geological Society of, ed. Mineral resources of Karnataka. Bangalore: Geological Society of India, 1996.
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Nkhoma, J. E. S. Mineral resources of Malawi. Zomba, Malawi: Ministry of Natural Resources and Environmental Affairs, Geological Survey Dept., 2000.
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Banerjee, Dilip K. Mineral resources of India. 2nd ed. Calcutta: World Press Private Limited, 1998.
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Kerrod, Robin. The world's mineral resources. New York: Thomson Learning, 1994.
Знайти повний текст джерелаЧастини книг з теми "Mines and mineral resources – Botswana"
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Qi, Fanyu, Xiaolei Li, Yuntao Shang, Jie Meng, Xuezheng Gao, Zhaoyu Kong, Haixin Li, and Haifei Yan. "Significance of the Building of National Mineral Deposit Database of China (2020)." In Atlas of Mineral Deposits Distribution in China (2020), 5–7. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0972-5_3.
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AbstractData are fundamental strategic resources of a country and are considered as “diamond mines” in the twenty-first century. Xi Jinping, general secretary of the Communist Party of China (CPC) Central Committee, has pointed out that big data is the next stage of informatization development and has significant and profound impacts on the economic development, social progress, and people's lives worldwide.
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Traoré, Pierre A., and Olle Ostensson. "2. Strategies for Development of Small/Medium Scale Mines in Africa; An Integrated Participatory Framework for the Exploitation of Mineral Resources in the Context of Sustainable Development — The Case of Namaqualand, South Africa." In Mining on a Small and Medium Scale, 17–34. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1997. http://dx.doi.org/10.3362/9781780445489.002.
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Singer, Donald, and W. David Menzie. "Mineral Resources and Society." In Quantitative Mineral Resource Assessments. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195399592.003.0005.
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Modern society cannot live without electric and electronic products, concrete, glass, fertilizers, ceramics, motor vehicles, airplanes, refrigerators, stoves, and medical equipment, all of which are made with products of mining. In the 1950s and again in the 1970s there was serious concern about whether we would run out of mineral resources. This recurring theme is driven largely by the increasing amounts of mineral material produced from mines and used by society over time. One of the most striking aspects of the increasing quantities of mineral materials produced has been that prices of many minerals have been declining for more than 100 years. Historically, prices of nonfuel mineral materials have declined relative to consumer goods and wages (Barnett and Morse, 1963). The declining prices have had a positive influence on general economies of mineral users by reducing prices of the factors of production of finished goods. Because mineral commodities are the building blocks of so many industries and products, the declining prices reverberate throughout the economy. Declining mineral commodity prices have largely been due to the successes of mining engineers in repeatedly lowering mining and processing costs and of geologists in lowering discovery costs of mineral deposits. Demonstrating the variability of commodity prices, between 2003 and 2008 prices have dramatically increased, and in 2008 they declined again. Understanding how it is possible to have both increasing production and decreasing and more recently increasing and then decreasing prices of minerals is important to assessors and to decision-makers. Decision-makers, whether concerned about regional development, exploration, or land management, are faced with the dilemma of obtaining new information, or allowing or encouraging others to obtain it, and the possible benefits and costs of development if mineral deposits of value are discovered. The intent in this chapter is to provide decision-makers and assessors a modern perspective on the geologic controls of mineral supply and demand and on the importance to supply of different kinds of mineral deposits and occurrences.
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Singer, Donald, and W. David Menzie. "Economic Analysis." In Quantitative Mineral Resource Assessments. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195399592.003.0008.
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Estimated undiscovered mineral resources are based on grade-and-tonnage models made up of deposits of varying economic viability (chapter 6). Many deposits used in grade-and-tonnage models have not been developed because they cannot yet be mined economically. Although technological advances act over time to lower mining costs and environmental impacts, thereby allowing formerly uneconomic deposits to become operating mines, some deposits in these models might “never” be mined for one or more of a variety of reasons, including relatively low tonnages and grades, deep burial, or occurrence in or near environmentally sensitive areas. Few nonacademic problems related to mineral resources are resolved by knowing the amount of metal that exists in some piece of land. Mineral policy issues and problems typically revolve around the effects of minerals that might be economically extracted. This is true if the problem concerns exploring or developing minerals, values of alternative uses of the land, or environmental consequences of minerals development. In resource assessments of undiscovered mineral deposits and in the early stages of exploration, including planning, a need for prefeasibility cost models exists. In exploration, these models separate economic from uneconomic deposits to help focus on targets that can benefit the exploration enterprise. In resource assessment, these cost models can be used to eliminate deposits that would probably be uneconomic even if discovered and allow estimation of the social value of the resources. Data used in grade-and-tonnage models do not necessarily represent economic deposits. Many of the deposits used in the models were found not to be economic and were not mined, whereas other deposits were mined long ago under economic conditions that no longer exist. In this chapter we briefly explore some alternative measures of value used in assessments and then develop the basis for simplified economic filters to separate the clearly economic from the clearly uneconomic deposits. The equations used are not difficult, but they require care in their application because many of the apparently small cost factors can have large effects on the final economic discrimination.
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Gordon, Robert B., and Patrick M. Malone. "Fuel and Materials." In The Texture of Industry. Oxford University Press, 1994. http://dx.doi.org/10.1093/oso/9780195058857.003.0014.
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As American entrepreneurs enlarged their undertakings and began to shift them from waterpowered shops in the countryside to factories in the cities, they created a demand for new sources of energy and larger quantities of raw materials. The coal and, later, oil that they used to power their factories were brought to manufacturing centers on canals and railways and by coastal or river shipping. They used the wood and water resources of North America more heavily than ever, but they also created new kinds of workplaces. Their workplaces in the coal and oil fields, on canals and railways, in mills that made iron with mineral coal, and in the nonferrous-metal mines and mills were outside any previous experience of American artisans. Often, these workplaces were not adequately described or recorded before they were replaced. Material evidence helps us fill this gap in the historical record. In mining anthracite, both miners and mine operators faced a complex underground environment where there were few reliable clues to guide their work (Chapter 4). Geologists could help little, and, as anthracite was not much used elsewhere in the world, mining expertise could not be easily borrowed; instead, mining methods were developed through experience and error on the part of individual miners. The technological and social practices that endured in anthracite mining were largely established in the years between 1827 and 1834 by inexperienced adventurers whose aim was to obtain coal quickly and with the least trouble. Many of these practices were later adopted in underground bituminous mines. We can reconstruct a picture of the work of anthracite miners from study of the remaining mines, artifacts, and accounts of mine operation. Each breast in a mine was worked by a miner, who was paid on piece rate. He directed and paid one or two helpers, for whom he provided the necessary tools and supplies. They reached the breast where they worked by walking through the haulage ways and gangways that were the common ground in the mine.
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Roberts, Patrick. "The Tropical ‘Anthropocene’ A Modern Battleground or a Long-Term Framework?" In Tropical Forests in Prehistory, History, and Modernity. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198818496.003.0012.
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Although referencing temperate, rather than tropical, rainforest destruction in the United States of America the above passage highlights the shift in landscape valuation driven by modern demographic and economic pressures. Firstly, as a greater proportion of the world’s population shifts to the tropics over the course of the twenty-first century, more and more local smallholders will rely on tropical forests as a source of freshwater, agricultural land, and urban land, as well as timber, medicine, and food (Ghazoul and Sheil, 2010; The State of the Tropics Project, 2016). Furthermore, rather than solely being contexts for local subsistence and use, tropical forests are now also national and international ‘mines’ that provision high value wood, minerals, fuels, and land for multi-national businesses and markets. Notions that tropical forests should be removed, rather than managed or maintained, in order to increase local productivity and land value, have led to them becoming the most threatened terrestrial environments on the face of the Earth after the polar ice-caps. Certainly, the increasingly dramatic impacts these pressures are having upon them form part of broader discussions of a new, human-driven era of earth systems domination known as the ‘Anthropocene’ (Malhi et al., 2014). Disproportionate biodiversity, the regulatory role these habitats play in local and regional soil structure and chemistry, and their position within local, regional, and even global climate systems mean that human alterations to tropical forests, that have been argued to have changed in nature and scale since the European industrial revolution of the eighteenth century and the ‘Great Acceleration’ of the 1960s, have massive implications for the planet as a whole (Malhi et al., 2014; Malhi, 2017). As a result, tropical forests are a focal political, economic, and cultural battlefield between local populations reliant upon living within them, and business and governmental interests seeking to extract from them. This chapter explores the tensions that exist in the human occupation and use of global tropical forest regions today, including the advance of urbanism and industrialization, exploitation of mineral, floral, and faunal resources by local groups and multi-national corporations, and their key position in discussions of anthropogenically induced climate change.
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Mitchell, Peter. "New Worlds for the Donkey." In The Donkey in Human History. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198749233.003.0013.
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One of the signature historical phenomena of the past 500 years has been the global expansion of European societies and their trans-Atlantic offshoots. The mercantile networks, commercial systems, and empires of conquest and colonization that formed the political and economic framework of that expansion involved the discovery and extraction of new mineral and agricultural resources, the establishment of new infrastructures of transport and communication, and the forcible relocation of millions of people. Another key component was the Columbian Exchange, the multiple transfers of people, animals, plants, and microbes that began even before Columbus, gathered pace after 1492, and were further fuelled as European settlement advanced into Africa, Australasia, and the Indian and Pacific Oceans. Donkeys evolved in the Old World and were confined there until the Columbian Exchange was underway. This chapter explores the introduction of the donkey and the mule to the Americas and, more briefly, to southern Africa and Australia. In keeping with my emphasis on seeking archaeological evidence with which to illuminate the donkey’s story, I omit other aspects of its expansion, such as the trade in animals to French plantations on the Indian Ocean islands of Réunion and Mauritius or, on a much greater scale, India to meet the demands of the British Raj. These examples nevertheless reinforce the argument that mules and donkeys were instrumental in creating and maintaining the structures of economic and political power that Europeans and Euro- Americans wielded in many parts of the globe. From Brazil to the United States, Mexico to Bolivia, Australia to South Africa, they helped directly in processing precious metals and were pivotal in moving gold and silver from mines to centres of consumption. At the same time, they aided the colonization of vast new interiors devoid of navigable rivers, maintained communications over terrain too rugged for wheeled vehicles to pose serious competition, and powered new forms of farming. Their contributions to agriculture and transport were well received by many of the societies that Europeans conquered and their mestizo descendants. However, they also provided opportunities for other Native communities to maintain a degree of independence and identity at and beyond the margins of the European-dominated world.
Тези доповідей конференцій з теми "Mines and mineral resources – Botswana"
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Anwar, Jamal, Sana Sabir, Sumit Kumar Ahirwar, Nisha Rani, and K. V. Krishnamurthy. "Study on Spectral Signature of Kaolinite {Al2Si2O5(OH)4} from Bageshpura Clay Mines, Hassan District of Karnataka." In Future Challenges in Earth Sciences for Energy and Mineral Resources. Geological Society of India, 2016. http://dx.doi.org/10.17491/cgsi/2016/95910.
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Portella, Ricardo B., Luiza F. Andrade, Tomazo Garzia Neto, and Nelson Coelho. "Single-Pour/Single Pass Loading: An Innovative Concept for a New Generation of Ore Carriers." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49589.
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Bulk Carriers have been developed since 1950 to carry large quantities of non-packed commodities such as grains, coal and iron ore. Nowadays, there are some 5,000 bulk carriers around the world and this number points to some concerns that affect owners of these types of ship and ports. One of these problems is the big waiting time at the ports that reaches 12% of the global fleet around the world at any given moment. At Brazilian iron ore ports the time waiting average was of 6–8 days during 2006–2008. A concrete example is the VALE operation that responds from mineral resources exploration to mineral resources delivery, passing through mines, railroads, seaport terminals and shipping business, forming a logistic chain that can not be interrupted by the expected growth in trade and consequent port congestion. In view of this, PROJEMAR and VALE faced the challenge of designing ore carriers in such a way that it would not interfere with the logistics chain by delaying other ships at the loading or discharge terminal. As the cargo operation is taken as the initial point of the design conception, the expected final product is a ship able to safely take loading rates as high as 16,000 tons of ore per hour, with each hold loaded in one pour and the ship fully loaded in one pass, resulting in fewer pours into the holds of the ore carrier, faster loading operations and, consequently, a significant economy for the ship owner and for the port. The amount of extra steel needed over conventional designs: less than one percent. The fundamental idea of this new concept, which PROJEMAR calls “single-pour, single-pass” design, is a method of ballast control that is synchronized with the cargo loading, scientifically deballasting the ship during loading in a way that balances the forces induced by the incoming cargo. Potential hull loading stress problems can occur due to the manner in which ore cargoes are loaded and due to the amount of cargo which is loaded in an individual hold. To avoid the creation of any unacceptable stresses in the ship’s structure, loading studies considering the planning of cargo loading and discharging operations, maximum allowable and minimum required mass of cargo for each hold and for adjacent holds as a function of the draught at mid-hold position in form of hold mass curves, calculations of still water shear forces and still water bending moments for each port loading condition and structural analysis are required to be developed on the early design stages. This ship loading concept is creating a new generation of ore carriers in such a way that the main class societies are nowadays developing new specific class notation dedicated to these ships. The purpose of this paper is to present the “single-pour, single pass” concept development and how it has been applied to the design of the new 400,000 DWT ore carriers that are being built for VALE in Chinese and Korean shipyards, and to the 80,100 DWT Bauxite Carrier that are being built for LOG-IN in Brazil. The “single-pour, single pass” concept was also partially considered on the design of 12 VLCCs that are being converted to VLOCs for VALE in China with PROJEMAR’s design.
Звіти організацій з теми "Mines and mineral resources – Botswana"
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Szumigala, D. J., and R. C. Swainbank. Map of selected mines, coalfields, and significant mineral resources of Alaska. Alaska Division of Geological & Geophysical Surveys, 1998. http://dx.doi.org/10.14509/742.
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Summerfield, Daisy. Australian Resource Reviews: Manganese Ore 2020. Geoscience Australia, 2021. http://dx.doi.org/10.11636/9781922446541.
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Britt, Allison, and Anthony Senior. Australian Resource Reviews: Antimony 2020. Geoscience Australia, 2021. http://dx.doi.org/10.11636/9781922446534.
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