DRILLING + DRILLING TECHNIQUES + DRILLING TECHNOLOGY (MINING)
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BTMINING OPERATIONS + EXPLOITATION, WORKING OF MINERAL DEPOSITS (MINING)
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UDC622.24
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Descriptor GERBOHRUNGEN + BOHRTECHNIK + BOHRTECHNOLOGIE (BERGBAU)
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Descriptor ENGDRILLING + DRILLING TECHNIQUES + DRILLING TECHNOLOGY (MINING)
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Descriptor FRESONDAGE + TECHNIQUE DE SONDAGE + TECHNOLOGIE DU SONDAGE (INDUSTRIE MINIÈRE)
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Variant GERBOHRARBEITEN (BERGBAU)
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Variant GERBOHRTECHNIK (BERGBAU)
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Variant GERBOHRTECHNOLOGIE (BERGBAU)
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Variant ENGDRILLING TECHNOLOGY (MINING)
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Variant ENGDRILLING (MINING)
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Variant FRETECHNIQUES/DE SONDAGE (INDUSTRIE MINIÈRE)
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Variant FRESONDAGE/TECHNOLOGIE DU SONDAGE (INDUSTRIE MINIÈRE)
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Variant FRETECHNOLOGIE/DU SONDAGE (INDUSTRIE MINIÈRE)
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Variant FRESONDAGE/TECHNIQUE MINIÈRE (INDUSTRIE MINIÈRE)
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NTDRILLING RIG EQUIPMENT + DRILLING TOWERS + DERRICKS (MINING)
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NTDRILLING COSTS (MINING)
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NTBOREHOLE DESCRIPTION + BOREHOLE DETAILS + LOGGING (MINING)
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NTCLEANING THE CAVINGS FROM THE BOTTOM OF THE HOLE + INITIAL DRILLING OF THE MINERAL DEPOSIT + FORMATION TESTING + SETTING-UP AND DISMANTLING OF DRILL RODS (MINING)
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NTDRILLING TOOLS + DRILLING EQUIPMENT (MINING)
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NTBREAKDOWNS, DAMAGE, FAULTS DURING DRILLING + MEASURES OF DRILLING DAMAGE PREVENTION, CONTROL AND REPAIR (MINING)
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NTDEEP DRILLING SYSTEMS + DIRECTIONAL DRILLING (MINING)
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NTFITTING-UP THE BOREHOLE + CASING + PRODUCTION START + ABANDONING THE BOREHOLE (MINING)