METHOD FOR VENTILATION OF MINE WORKING Russian patent published in 1997 - IPC

Abstract RU 2098634 C1

FIELD: mining industry; may be used in driving of mine workings in underground mineral mining. SUBSTANCE: made in ventilated workings are two outlet openings of boreholes, one of which is closed during operation of local ventilation fan. EFFECT: reduced material costs for ventilation and its improvement due to use of one and the same boreholes for working ventilation. 1 dwg

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RU 2 098 634 C1

Authors

Gertsen N.I.

Dates

1997-12-10—Published

1995-10-16—Filed