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Artykuły w czasopismach na temat "Gold and gold mining"
Arce, L. "Mining GOLD". IEEE Potentials 20, nr 1 (luty 2001): 24–25. http://dx.doi.org/10.1109/mp.2001.913207.
Pełny tekst źródłaMarshall, S. Brooks. "Mining Fool's Gold". CFA Digest 29, nr 4 (listopad 1999): 27–29. http://dx.doi.org/10.2469/dig.v29.n4.561.
Pełny tekst źródłaMcQueen, Grant, i Steven Thorley. "Mining Fool's Gold". Financial Analysts Journal 55, nr 2 (marzec 1999): 61–72. http://dx.doi.org/10.2469/faj.v55.n2.2261.
Pełny tekst źródłaMitten, L. A. "Mining for Gold". Choice Reviews Online 47, nr 02 (1.10.2009): 232. http://dx.doi.org/10.5860/choice.47.02.232.
Pełny tekst źródłaPhakathi, Sizwe Timothy. "Gold Mining Today". Transformation: Critical Perspectives on Southern Africa 75, nr 1 (2011): 185–92. http://dx.doi.org/10.1353/trn.2011.0010.
Pełny tekst źródłaMalay, D. Scot. "Mining for Gold". Journal of Foot and Ankle Surgery 57, nr 6 (listopad 2018): 1055. http://dx.doi.org/10.1053/j.jfas.2018.09.017.
Pełny tekst źródłaSykes, Claire L. "Mining for Gold". Afterimage 34, nr 6 (1.05.2007): 20–21. http://dx.doi.org/10.1525/aft.2007.34.6.20.
Pełny tekst źródłaDowns, Christian. "Mining for Gold". Oncology Issues 23, nr 2 (marzec 2008): 4. http://dx.doi.org/10.1080/10463356.2008.11883393.
Pełny tekst źródłaMadsen, Brigham D. "Mining Mormon Gold". Dialogue: A Journal of Mormon Thought 19, nr 1 (1.04.1986): 181. http://dx.doi.org/10.2307/45225465.
Pełny tekst źródłaPhillips, C. V. "Gold mining 87". Minerals Engineering 2, nr 2 (styczeń 1989): 273. http://dx.doi.org/10.1016/0892-6875(89)90050-2.
Pełny tekst źródłaRozprawy doktorskie na temat "Gold and gold mining"
Bouwer, Wendy. "An environmentally sound gold recovery process for small-scale gold mining". Thesis, Cape Technikon, 1999. http://hdl.handle.net/20.500.11838/869.
Pełny tekst źródłaThe gold mining industry has mainly relied upon the use of a highly polluting chemicals, such as mercury and cyanide, to recover gold from its ores. As environmental legislation has become more stringent in all countries and environmental protection has become the focus of world-wide research, development of environmental sound processes has been favoured. The Coal Gold Agglomeration (CGA) process is such a process which was developed some years ago and has the advantage in that gold is recovered by a procedure which has little or no effect on the environment. The CGA process is based on the hydrophobic characteristics of coal, gold and oil. Gold particles which are substantially free become attached to the coal-oil agglomerates during collision, and eventually penetrate into the agglomerates. The resulting agglomerates are recycled to increase the gold loading, separated from the slurry, burnt, ashed and smelted to produce gold bullion. Laboratory scale batch tests were performed on an artificial/synthetic gold ore, containing fine gold powder. The slurry was contacted with a mixture of coal and oil. i.e. coal-oil agglomerates, after which both the agglomerates and ore were analysed for gold. Operating parameters, such as the mode of contact between the coal-oil phase and the gold containing slurry, contact time of the slurry and the coal-oil phase, means of separating the coal-oil gold agglomerates from the slurry, coal to ore, coal to oil and water to ore ratios, type of oil, effect of collectors and the mineralogy of the ore on the gold recovery were investigated. Results have shown that stirring the coal-oil phase and the slug yielded higher gold loadings than shaking and the traditional rolling bottle technique. BI increasing the time of contact between the coal-oil phase and the gold slurry. the final gold loading in the agglomerates increases, until an equilibrium value is reached. An increase in the amount of coal, together with a decrease in the amount of water used in the slurry, has shown to increase gold recoveries. Furthermore, by varying the concentration and volume of a collector. such as potassium amyl xanthate (PAX) enhanced the settling rate and enabled the effectiveness of separation. Moreover, it was found that the gold loading on the coal-oil phase increased after recycling it. Further tests were performed on a real ore sample and after X-ray Diffraction (XRD) analysis, it was found that certain minerals other than gold was transferred to the coal-oil phase. The theoretical foundation of the CGA process is based on the difference in free energy and was expressed as a function of the interfacial tensions and three-phase contact angles between gold, oil and water, together with the ratio of coal-oil agglomerate to gold particle radii, as the free energy is a measure of the thermodynamic stability and hence, partly a measure of gold recoveries, meaningful predictions as to gold recoveries were made by performing a sensitivity analysis on the variables connected to the free energy, It was, however, found that some operating parameters, which were linked to other factors, such as the maximum gold transfer into coal-oil phase and the separation efficiency of the agglomerates. were vital to be taken into account when predictions as to gold recoveries were made. Therefore, the gold recoveries were found to be a function of the thermodynamic stability as well as the maximum gold transfer into the coal-oil phase and the separation efficiency of the agglomerates, The meaningful information gained by performing the theoretical investigations were applied and linked to gold recoveries, thereby providing useful explanations as to the typical gold recoveries obtained during experimentation. A comparative study on mercury amalgamation was done to evaluate the performance of the CGA process. It was found that the CGA process yielded better gold recoveries than amalgamation, which makes it the better process both in terms of recoveries as well as environmental safety, A further application of the theoretical knowledge was, however, very useful to explain the tendency of the CGA process yielding the better results.
Siegel, Shefa. "The needs of miners: political ethics, mercury abatement, and intervention in artisanal gold mining communities". Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/435.
Pełny tekst źródłaTran, Dung Trung. "Gold-containing bimetallicnanoparticles". Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/1362/.
Pełny tekst źródłaMorse, Kathryn Taylor. "The nature of gold : an environmental history of the Alaska/Yukon gold rush /". Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/10468.
Pełny tekst źródłaMather, Diarmid John. "An approach to analyzing gold supply from the South African gold mines". Thesis, Rhodes University, 1995. http://hdl.handle.net/10962/d1002750.
Pełny tekst źródłaJoubert, Barend Daniel. "Small-scale gold mining in southern Africa". Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005615.
Pełny tekst źródłaAckley, Mary. "Evaluating Environmental Risks in Mining: a Perceptual Study". ScholarWorks @ UVM, 2008. http://scholarworks.uvm.edu/graddis/7.
Pełny tekst źródłaMann, P. L. "Surficial placer gold deposits". Thesis, Rhodes University, 1994. http://hdl.handle.net/10962/d1018245.
Pełny tekst źródłaVermeulen, Nicolaas Johannes. "The composition and state of gold tailings". Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-03102006-122937/.
Pełny tekst źródłaXiao, Jie 1964. "Testing a new gold centrifugal concentrator". Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20932.
Pełny tekst źródłaThe performances of a 21-in SuperBowl (SB21) at Mineral Hill and New Britannia Mines showed that it could recover gravity recoverable gold (GRG) of all sizes, especially below 25 mum at Mineral Hill Mine.
Three types (to test the effect of gangue density and size distribution) of synthetic feeds were used to characterize a laboratory 4-in SuperBowl (SB4) as a function of feed rate and fluidization water flow rate.
A 20-in Knelson Concentrator and a shaking table were further tested in this program with the samples extracted from Casa Berardi and Mineral Hill Mine, respectively. The 30-in Knelson was tested at two different conditions to assess the impact of fluidization water flow rate and explore the importance of cycle time. (Abstract shortened by UMI.)
Książki na temat "Gold and gold mining"
Otwell, W. Larry. Panning Georgia's gold: The gold-panner's guidebook. Cleveland, GA (P.O. Box 42, Cleveland 30528): Rainbow Sequoia, Pub., 1985.
Znajdź pełny tekst źródłaPatera, Alan H. Hornsilver/Gold Point, Nevada: Silver turns to gold. Lake Grove, OR: Western Places, 2003.
Znajdź pełny tekst źródłaElbra, Ainsley. Governing African Gold Mining. London: Palgrave Macmillan UK, 2017. http://dx.doi.org/10.1057/978-1-137-56354-5.
Pełny tekst źródłaBen, Davies, King Paul i Euromoney, red. Gold metals and mining. London: Euromoney, 1988.
Znajdź pełny tekst źródłaBert, Webber, red. Gold mining in Oregon. Medford, OR: Webb Research Group, 1995.
Znajdź pełny tekst źródłaKocsis, Tibor. Gold futures. Princeton, NJ: Films for the Humanities & Sciences, 2007.
Znajdź pełny tekst źródłaKutz, Kenneth J. Gold fever. Darien, Conn., U.S.A: Gold Fever Pub., 1988.
Znajdź pełny tekst źródłaMurphy, Gail. Gold dust. Macon, Ga: Samhain Pub., 2008.
Znajdź pełny tekst źródłaDancer, Abe. Teal's gold. Anstey, Leicestershire: F.A. Thorpe, 2014.
Znajdź pełny tekst źródła(Firm), Hordern House. Gold: The Australian gold rushes. Sydney: Hordern House, 1990.
Znajdź pełny tekst źródłaCzęści książek na temat "Gold and gold mining"
Boyle, Robert W. "The Economics of Gold and Gold Mining". W Gold, 627–61. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1969-6_19.
Pełny tekst źródłaWeifeng, Liu, i Xu Kuangdi. "Gold Metallurgy". W The ECPH Encyclopedia of Mining and Metallurgy, 1–3. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_756-1.
Pełny tekst źródłaKezhi, Wang, Han Rubin i Xu Kuangdi. "Gold Foil". W The ECPH Encyclopedia of Mining and Metallurgy, 1–2. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_588-1.
Pełny tekst źródłaKabunga, Philippe Dunia, Simon Marijsse i Sara Geenen. "Chasing gold". W Mining, Mobility, and Social Change in the Global South, 83–100. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003313236-7.
Pełny tekst źródłaGrynberg, Roman, i Fwasa K. Singogo. "Taxation and Illicit Financial Flows in the Gold Mining Sector". W African Gold, 443–69. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65995-0_13.
Pełny tekst źródłaHigh, Mette. "Gold Mining in Mongolia". W Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures, 1–4. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-3934-5_9903-1.
Pełny tekst źródłaHigh, Mette. "Gold Mining in Mongolia". W Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures, 2133–35. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-7747-7_9903.
Pełny tekst źródłaSpeck, Dimitri. "Strong Dollar and Weak Mining Stocks". W The Gold Cartel, 140–43. London: Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137286437_25.
Pełny tekst źródłaKamp, N. "Backfilling on gold mines of the Gold Fields group". W Innovations in Mining Backfill Technology, 39–49. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003211488-6.
Pełny tekst źródłaElbra, Ainsley. "Introduction". W Governing African Gold Mining, 1–33. London: Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1057/978-1-137-56354-5_1.
Pełny tekst źródłaStreszczenia konferencji na temat "Gold and gold mining"
Kumar, Rajah Vijay, Vishaka V. K., Jeevitha G. i Pavithra C.L. "Microbial-Enzymatic Gold Nuggetization Process in Extraction of Gold from Old Mill Tailings of Kolar Gold Fields, Karnataka". W Gold Mining in India: The Way Forward. The Geological Society of India, 2021. http://dx.doi.org/10.17491/cgsi/2021/165475.
Pełny tekst źródłaVasudev, V. N. "Gold Resources of India: Immense Scope for Development of New Gold Mines". W Gold Mining in India: The Way Forward. The Geological Society of India, 2021. http://dx.doi.org/10.17491/cgsi/2021/165466.
Pełny tekst źródłaOsovetsky, Boris. "NATURAL NANOTECHNOLOGIES IN GOLD MINING". W 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/61/s24.036.
Pełny tekst źródłaAkhmetova, Kuralai. "TREATMENT OF GOLD MINING WASTE". W SGEM2011 11th International Multidisciplinary Scientific GeoConference and EXPO. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2011/s21.119.
Pełny tekst źródłaWells, Lindsay, Aran Cauchi-Saunders, Ian Lewis, Lorenzo Monsif, Benjamin Geelan i Kristy de Salas. "Mining for Gold (and Platinum)". W CHI PLAY '16: The annual symposium on Computer-Human Interaction in Play. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2967934.2968112.
Pełny tekst źródłaMishra, Biswajit. "Gold in Dharwar Craton: Current Genetic Understanding". W Gold Mining in India: The Way Forward. The Geological Society of India, 2021. http://dx.doi.org/10.17491/cgsi/2021/165461.
Pełny tekst źródłaChinnasamy, Sakthi Saravanan. "Geochemistry of Gold-Hosting Granitoids from Jonnagiri Greenstone Belt, Eastern Dharwar Craton: Implications on Petrogenesis and Gold Mineralization". W Gold Mining in India: The Way Forward. The Geological Society of India, 2021. http://dx.doi.org/10.17491/cgsi/2021/165463.
Pełny tekst źródłaMath, S. S. Chandrashekar. "Plant-Microbe-Rock Association in Exploration for Gold". W Gold Mining in India: The Way Forward. The Geological Society of India, 2021. http://dx.doi.org/10.17491/cgsi/2021/165476.
Pełny tekst źródłaVasudev, V. N., H. M. Ramachandra i N. Rajendran. "Epilogue". W Gold Mining in India: The Way Forward. The Geological Society of India, 2021. http://dx.doi.org/10.17491/cgsi/2021/165477.
Pełny tekst źródłaVasudev, V. N., H. M. Ramachandra i N. Rajendran. "Preface". W Gold Mining in India: The Way Forward. The Geological Society of India, 2021. http://dx.doi.org/10.17491/cgsi/2021/165459.
Pełny tekst źródłaRaporty organizacyjne na temat "Gold and gold mining"
Miller, Jonah. Mining for Cosmic Gold with Supercomputers. Office of Scientific and Technical Information (OSTI), listopad 2020. http://dx.doi.org/10.2172/1726140.
Pełny tekst źródłaLkhaajav, Bolor. Mongolia’s mining partnerships extract foreign policy gold. East Asia Forum, grudzień 2023. http://dx.doi.org/10.59425/eabc.1703887207.
Pełny tekst źródłaTurner, B., M. Quat, R. Debicki i P. Thurston. Mining heritage tour, Kirkland Lake: a century of mining the 'Mile of Gold'. Natural Resources Canada/CMSS/Information Management, 2015. http://dx.doi.org/10.4095/329914.
Pełny tekst źródłaBorenstein, Severin, i Joseph Farrell. Do Investors Forecast Fat Firms? Evidence from the Gold Mining Industry. Cambridge, MA: National Bureau of Economic Research, kwiecień 1999. http://dx.doi.org/10.3386/w7075.
Pełny tekst źródłaFalck, H. Gold Mineralization in the Yellowknife Mining District, NWT [NTS 85j/7,8,9,16]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133314.
Pełny tekst źródłaStruik, L. C. Structural Geology of the Cariboo Gold Mining District, East-Central British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/126423.
Pełny tekst źródłaBonilla-Mejía, Leonardo. Illegal Mining and Human Capital Accumulation: Evidence from the Colombian Gold Rush. Banco de la República de Colombia, maj 2019. http://dx.doi.org/10.32468/dtseru.280.
Pełny tekst źródłaKatherine Markham, Katherine Markham. Amphibian Vulnerability to Artisanal and Small-Scale Gold Mining in the Peruvian Amazon. Experiment, kwiecień 2016. http://dx.doi.org/10.18258/6995.
Pełny tekst źródłaPasha, Sukrishnalall, Mark D. Wenner i Dillon Clarke. Toward the Greening of the Gold Mining Sector of Guyana: Transition Issues and Challenges. Inter-American Development Bank, lipiec 2017. http://dx.doi.org/10.18235/0000759.
Pełny tekst źródłaRosales, Judith, Paul E. Ouboter i David S. Hammond. Managing the Freshwater Impacts of Surface Mining in Latin America. Inter-American Development Bank, marzec 2013. http://dx.doi.org/10.18235/0009091.
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