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CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH (parts 56 to 58) > PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES > SUBPART D—Air Quality, Radiation, Physical Agents, and Diesel Particulate Matter (§57.5001 to §57.5075) > 57.5002—Exposure monitoring.
57.5002—Exposure monitoring.
Dust, gas, mist, and fume surveys shall be conducted as frequently as necessary to determine the adequacy of control measures.