The top ten deepest mines in the world - Mining TechnologySep 11, 2013 . The ore reserve at Mponeng stood at 13.7 million ounces (Moz) as . The mine exploits the gold contained reefs at a depth of more than 3.7km.deep ore gold mining in welkom,GOLD FIELDS - Mineral Resource and Mineral Reserve .In summary, the Beatrix Mineral Resource base has increased by 9% . Deposit Type, Shallow to intermediate depth gold mine exploiting auriferous . located near the towns of ia and Welkom in South Africa s Free State Province.
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