30 C.F.R. § 57.5042
Current through May 31, 2024
If levels of permissible exposures to concentrations of radon daughters different from those prescribed in 57.5038 are recommended by the Environmental Protection Agency and approved by the President, no employee shall be permitted to receive exposures in excess of those levels after the effective dates established by the Agency.
30 C.F.R. §57.5042