DEEP DRILLING SYSTEMS + DIRECTIONAL DRILLING (MINING)
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BTDRILLING + DRILLING TECHNIQUES + DRILLING TECHNOLOGY (MINING)
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UDC622.243
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Descriptor GERTIEFBOHRVERFAHREN + RICHTUNGSBOHREN (BERGBAU)
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Descriptor ENGDEEP DRILLING SYSTEMS + DIRECTIONAL DRILLING (MINING)
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Descriptor FRESYSTÈMES DE FORAGE PROFOND (INDUSTRIE MINIÈRE)
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Variant GERBOHRVERFAHREN/TIEFBOHRVERFAHREN (BERGBAU)
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Variant GERBOHRUNG/TIEFBOHRVERFAHREN (BERGBAU)
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Variant GERBOHRVERFAHREN/RICHTUNGSBOHREN (BERGBAU)
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Variant GERTIEFBOHRVERFAHREN (BERGBAU)
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Variant GERRICHTUNGSBOHREN (BERGBAU)
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Variant ENGDRILLING SYSTEMS/DEEP DRILLING SYSTEMS (MINING)
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Variant ENGBOREHOLE/DEEP DRILLING TECHNIQUES (MINING)
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Variant ENGDEEP BORING TECHNIQUES (MINING)
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Variant ENGDIRECTIONAL DRILLING (MINING)
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Variant FREFORAGES/PROFONDS (INDUSTRIE MINIÈRE)
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NTDEVIATION (MINING)
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NTROTARY TABLE DRILLING (MINING)
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NTHORIZONTAL DRILLING, WELLS (MINING)
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NTCORE DRILLING (MINING)
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NTSIDE-TRACKING (MINING)
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NTFLUSH BORING SYSTEMS (MINING)
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NTPERCUSSIVE DRILLING (MINING)
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RTMICROTUNNELLING (CIVIL ENGINEERING)
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RTPIPE JACKING (CIVIL ENGINEERING)