Extraction and Refining of the Platinum Metals
Extraction and Refining of the Platinum Metals A COMPLEX CYCLE OF SMELTING, ELECTROLYTIC ... early nineteen twenties when large deposits of platinum bearing ore were discovered in the Transvaal in South Africa. This led to the formation in 1931 of Rustenburg Platinum Mines Limited to work these deposits, and ... Copper and iron are present in the