De-energizing a non-intrinsically safe automatic fire sensor and warning systems after a main mine fan stoppage by United States. Mine Safety and Health Administration

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Reissue of PIB No. P07-21 clarification of requirements for conveyor belt system start-up warnings on conveyor belt systems which start automatically. by United States. Mine Safety and Health Administration

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Compressed gas system leakage by United States. Mine Safety and Health Administration

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Reissue of P07-15 potential safety hazard on permissible mobile diesel-powered transportation equipment with Sandvik (formerly EJC Mining Equipment, Inc.) wet scrubber systems. by United States. Mine Safety and Health Administration

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Reissue of P05-20 evaluation of diesel particulate matter after-treatment devices on non-permissible, heavy-duty, diesel-powered equipment, compressors, and generators. by United States. Mine Safety and Health Administration

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Potential shock and ignition hazard involving permissible and non-permissible battery-powered machines by United States. Mine Safety and Health Administration

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Reissue of P07-18 maximum total exhaust system backpressure specification increase for Caterpillar Inc.'s (Caterpillar's) 3304 PCNA and 3306 PCNA diesel engines. by United States. Mine Safety and Health Administration

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