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Keywords: pillar
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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
... of it. The underground mining is carried out by means of systems of chambers with gravel rib pillars left or artificial backfills produced. The technique involving freezing of water is applied to construct artificial pillars. Overburden rocks are used as the stowing material. Underground gravels are recovered...
