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TITLE(s): ROCK-DUST SPRAYER (mine & quarry) Sprays water or rock dust onto walls, roof, and floor of underground mine workings to mix with coal dust deposits and prevent explosions, using portable compressed-air pump and hose. Mixes rock dust with water and sprays slurry during working hours, to reduce amount of suspended coal dust in air while miners are present. GOE: 05.12.14 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 77 | |||||||||||||||||||||||||||||||||||
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