METHOD OF WORKING EXTRA-THIN GENTLY-SLOPING COAL BEDS
BOGURAEV IVAN N,SU, OVCHARENKO GRIGORIJ V,SU, SEREBRYANSKIJ ANATOLIJ I,SU, SUKHININ ALEKSEJ I,SU
Year of Publication 15.06.1983
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Year of Publication 15.06.1983
Patent
METHOD OF CONTROLLING SOLID ROOF WHEN WORKING GENTLY-SLOPING AND INCLINED COAL BEDS BY LONG PILLARS
GAPONOV NIKOLAJ N,SU, ABRAMOV VITALIJ M,SU, BORISOV ALEKSEJ A,SU, OVCHARENKO BORIS P,SU, OVCHARENKO GRIGORIJ V,SU, SEREBRYANSKIJ ANATOLIJ I,SU, TISHCHENKO SERGEJ M,SU, SUKHININ ALEKSEJ I,SU
Year of Publication 15.03.1983
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Year of Publication 15.03.1983
Patent