2ND GENERATION ROCK DRILL MUFFLING: In 2005 the Department of Mineral and Energy announced new benchmarks for upper noise level limits for all mining machinery to be 110dBa. Such noise level compliant machinery has to be in place by the year 2013. Tranter Rock Drills staff were present at the Mine Health and Safety Summit when these benchmarks were announced and immediately rose to the challenge to develop new quiet technology in pneumatic rock drills.
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