Shaft sinking companies are showing an increasing interest in the use of shaft drill rigs equipped with high performance hydraulic rock drills. Therefore Deilmann-Haniel Mining Systems GmbH (dhms) has developed all-hydraulic shaft drill rigs with three or four drill booms now. The rigs are available in flameproof or non-flameproof version. The first all-hydraulic shaft drill rig with four booms will ...
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