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solid waste from mining

Ore bodies usually contain more than one type of mineralization. As examples, ore mined primarily for its platinum content, usually also contains chrome, used in stainless steel manufacture, and apatite from which phosphate fertilizers can be produced. At least one platinum mine in South Africa also extracts chrome as a by-product and supports a phosphoric acid plant for fertilizer manufacture. Another example relating to by-products is the South African gold mining industry which produced uranium as a by-product, much of which contributed to the Hiroshima and Nagasaki bombs during World War II. This activity stopped in the mid-1960s when the price of uranium fell, but it is now starting up again as it is being realized that nuclear power will have to be used in the future to replace dwindling coal and oil supplies. Figure 5.1 shows a dump of waste sand, from early mining operations (1885–1905), in the process of being removed for reprocessing to extract gold and uranium left in the sand after the initial extraction process, 100 years ago Learn More

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