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Commercial gold mining of the Witwatersrand Supergroup in the Far West Rand goldfields of South Africa started early in the previous century and produced U as a by-product. Grades of up to 1000 mg/kg, was achieved between 1952 and 1991. Before and after t
Commercial gold mining of the Witwatersrand Supergroup in the Far West Rand goldfields of South Africa started early in the previous century and produced U as a by-product. Grades of up to 1000 mg / kg, was achieved between 1952 and 1991. Before and after t