30 C.F.R. § 57.5039
Current through September 30, 2024
Except as provided by standard § 57.5005 , persons shall not be exposed to air containing concentrations of radon daughters exceeding 1.0 WL in active workings.
30 C.F.R. §57.5039
Title 30 - MINERAL RESOURCESChapter I - MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABORSubchapter K - METAL AND NONMETAL MINE SAFETY AND HEALTHPart 57 - SAFETY AND HEALTH STANDARDS-UNDERGROUND METAL AND NONMETAL MINESSubpart D - AIR QUALITY, RADIATION, PHYSICAL AGENTS, AND DIESEL PARTICULATE MATTER