MINING METHODS + METHODS OF WORKING (MINING)
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BTMINING OPERATIONS + EXPLOITATION, WORKING OF MINERAL DEPOSITS (MINING)
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UDC622.27
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Descriptor GERABBAUVERFAHREN ÜBER UND UNTER TAGE (BERGBAU)
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Descriptor ENGMINING METHODS + METHODS OF WORKING (MINING)
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Descriptor FREMETHODES D'EXPLOITATION DES MINES, SURFACE ET SOUTTERAIN (INDUSTRIE MINIÈRE)
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Variant GERABBAUVERFAHREN (BERGBAU)
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Variant ENGMINING METHODS (MINING)
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Variant ENGMETHODS OF WORKING (MINING)
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Variant FREEXPLOITATION/METHODES D'EXPLOITATION DES MINES, SURFACE ET SOUTTERAIN (INDUSTRIE MINIÈRE)
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NTWORKING OF HORIZONTAL DEPOSITS (MINING)
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NTWORKINGS OF VERTICAL OR STEEPLY INCLINED DEPOSITS, LAYERS, VEINS, LODES, EDGE COAL (MINING)
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NTPETROLEUM EXTRACTION + WORKING OF MINERAL OIL DEPOSITS (MINING)
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NTEXTRACTION OF NATURAL GAS, GASEOUS HYDROCARBON DEPOSITS (MINING)
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NTCOMBINED MINING SYSTEMS WITH RECOVERY OF MINERAL IN THE SOLID STATE (MINING)
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NTSURFACE WORKING (MINING)
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NTUNDERGROUND WORKING SUBSURFACE WORKING IN GENERAL + STOPING (MINING)
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NTUNDERGROUND GASIFICATION + UNDERGROUND VAPORIZATION (MINING)
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NTUNDERGROUND LIQUEFICATION + EXTRACTION BY BOREHOLE (MINING)