30 CFR 56.5002 : Mineral Resources (§ 1.1 To Parts 1291-1299) — (§ 1.1 To Parts 105-199) — Mine Safety And Health Administration, Department Of Labor (§ 1.1 To Parts 105-199) — Metal And Nonmetal Mine Safety And Health (§ 56.1 To § 58.620) — Safety And Health Standards - Surface Metal And Nonmetal Mines (§ 56.1 To § 56.20014) — Air Quality And Physical Agents (§ 56.5001 To § 56.5006) — Air Quality (§ 56.5001 To § 56.5006) — Exposure monitoring.

4 Aug 2016

Dust, gas, mist, and fume surveys shall be conducted as frequently as necessary to determine the adequacy of control measures.

30 CFR 56.5002