DRILLING MUD (MINING)
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BTCLEANING THE BOTTOM OF THE HOLE DURING DRILLING (MINING)
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UDC622.244.44
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Descriptor GERTONSPÜLUNG (BERGBAU)
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Descriptor ENGDRILLING MUD (MINING)
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Descriptor FRENETTOYAGE DU TROU PENDANT LE FORAGE (INDUSTRIE MINIÈRE)
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Variant FRERINCAGE DES BOUES DE FORAGE (INDUSTRIE MINIÈRE)
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NTPROPERTIES OF DRILLING MUD (MINING)