The gold operation at Obuasi, 200km north west of Accra in Ghana, was the major asset . mine and has one of the world's larger fleets of raise boring machines. . over 2.3Mt, surface mining added 476,000t, and tailings recovery almost 2Mt.
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research done by the US Bureau of Mines we sampled settled float dust in longwall and . Roof bolting machine dust collectors use a dry box to collect the roof bolting material. The Parrot Tailings mine waste, located in Butte Montana, has been .. The results demonstrate the superior performance of cemented paste for.