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cmenor. (2014). The silver minerals of San José district, Oaxaca (México). Retrieved from http://mineral-analysis.es/the-silver-minerals-of-san-jose-district-oaxaca-mexico/
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Oancea, D. (2013). Underground Block Caving: A Guide for Investors. Retrieved from http://resourceinvestingnews.com/53638-underground-block-caving-guide-investors-open-pit-mining-rio-tinto-codelco-freeport-grasberg-chuquicamata.html
Massachusetts Institute of Technology. (n.d.). Environmental Risks of Mining. Retrieved from http://web.mit.edu/12.000/www/m2016/finalwebsite/problems/mining.html
Royal Society of Chemistry. (2015). Uranium. Retrieved from http://www.rsc.org/periodic-table/element/92/uranium
Geology.com. (2015). Mineral Uses, Properties, Descriptions. Retrieved from http://geology.com/minerals/
cmenor. (2014). The silver minerals of San José district, Oaxaca (México). Retrieved from http://mineral-analysis.es/the-silver-minerals-of-san-jose-district-oaxaca-mexico/
Conserve Energy Future. (2015). Fossil Fuels. Retrieved from http://www.conserve-energy-future.com/Advantages_FossilFuels.php
Ecolab. (2015). Industrial Minerals. Retrieved from http://www.ecolab.com/market/industrial-minerals/
Oancea, D. (2013). Underground Block Caving: A Guide for Investors. Retrieved from http://resourceinvestingnews.com/53638-underground-block-caving-guide-investors-open-pit-mining-rio-tinto-codelco-freeport-grasberg-chuquicamata.html
Massachusetts Institute of Technology. (n.d.). Environmental Risks of Mining. Retrieved from http://web.mit.edu/12.000/www/m2016/finalwebsite/problems/mining.html
Royal Society of Chemistry. (2015). Uranium. Retrieved from http://www.rsc.org/periodic-table/element/92/uranium