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2 011 827

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C1

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IPC

(21) (22)

Application

4917783/03, 1991-03-11

(22)

Actual filing date

1991-03-11

(45)

Published

1994-04-30

(72)

Inventor

Kurlenja M.V.Molotilov S.G.Dubrovskaja N.I.

(73)

Holder

Institut Gornogo Dela So Ran

METHOD FOR OPENCAST MINING OF GENTLY SLOPING AND INCLINED MINERAL DEPOSITS Russian patent published in 1994 - IPC

Abstract RU 2011827 C1

FIELD: mining. SUBSTANCE: method consists in excavation of approach trench at angle to bed strike line in plan, and excavation of working trench through the entire length of open pit. Made on pit nonmining flank is stationary route at angle to bed strike line. Nonmining flank is also formed at angle to bed strike line. In this case, front of mining operations on the strike is decreased. Simultaneously with decreasing of mining front, formed on the bed strike is mining front parallel to approach trench and mined in direction square to approach trench. EFFECT: higher efficiency. 2 dwg

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RU 2 011 827 C1

Authors

Kurlenja M.V.

Molotilov S.G.

Dubrovskaja N.I.

Dates

1994-04-30—Published

1991-03-11—Filed

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