§ 72.620 - Drill dust control at surface mines and surface areas of underground mines.

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§ 72.620 Drill dust control at surface mines and surface areas of underground mines.

Holes shall be collared and drilled wet, or other effective dust control measures shall be used, when drilling non-water-soluble material. Effective dust control measures shall be used when drilling water-soluble material.

                    
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§ 72.620 - Drill dust control at surface mines and surface areas of underground mines.

§ 72.620 Drill dust control at surface mines and surface areas of underground mines.