Maker claims the pneumatic hammer can drill 6.25-in.-diameter holes at penetration rates of up to 150 ft. per hour HammerHead claims its Roughneck R500 rock drilling system can turn any horizontal ...
Atlas Copco, a machinery manufacturer based in Sweden, unveiled a rock drill machine with a drill speed that is 50 percent faster than its previous model, the firm’s Seoul office said Tuesday. Atlas ...
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