METHOD FOR FINISHING OPEN-PITS Russian patent published in 1997 - IPC

Abstract RU 2077674 C1

FIELD: mining. SUBSTANCE: on developing sides up to the intermediate bottom of the open pit after the changed outline, the wells are drilled and blasted up to the depth ensuring its excavation beyond limits of the design bottom. EFFECT: higher productivity. 4 dwg

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RU 2 077 674 C1

Authors

Kuznetsov Nikolaj Nikolaevich

Dates

1997-04-20—Published

1994-04-04—Filed