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Keywords: opencast
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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
... ABSTRACT Perennialy frozen placers at depth of 10 to 30 m may be profitably mined by combining the opencast and underground mining procedures. According to this method, the placer is at first partially mined in opencasts, and then the underground mining is used to recover the rest...
