CLEANING 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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BTDRILLING + DRILLING TECHNIQUES + DRILLING TECHNOLOGY (MINING)
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UDC622.244
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Descriptor GERBOHRLOCHSOHLEREINIGUNG + ANBOHREN DER LAGERSTÄTTE + FORMATISONSTESTEN + EIN- UND AUSBAU DES BOHRGESTÄNGES (BERGBAU)
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Descriptor ENGCLEANING 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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Descriptor FRENETTOYAGE DES CHUTES DU FOND DU TROU + FORAGE INITIAL GISEMENT MINÉRAL + ESSAI DE LA FORMATION ASSEMBLAGE ET DÉMONTAGE DES TIGES DE SONDAGE (INDUSTRIE MINIÈRE)
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NTCLEANING THE BOTTOM OF THE HOLE DURING DRILLING (MINING)