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Keywords: ventilation
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Proceedings Papers
Open-Cast Underground Technology of Permafrost Placer Mining in the Arctic
Available to PurchasePublisher: Society of Petroleum Engineers (SPE)
Paper presented at the International Arctic Technology Conference, May 29–31, 1991
Paper Number: SPE-22084-MS
... and transported to the washing site. The opencast-underground technique is the most expedient for mining deep placers considering the problems of recultivation under the Arctic conditions. placer metals & mining efficiency spe 22084 procedure operation pillar opencast placer mining ventilation...
