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Rotary drilling rig / blasthole - ø 229 - 381 mm | MD6540
The rotary blasthole drills for mining have a bit load up to 53,845 kg (119,050 lb) and a hole diameter of 229 to 381 mm (9 to 15 in). The single-pass hole depth is 16.5 to 20.0 m (54.1 to 65.6 ft) and the drills have a working weight of 131,000 kg (288,806 lb).