30 C.F.R. § 77.1913
Current through October 31, 2024
Except for crossties, timbers, and other wood products which are permanently installed in slopes and shafts, shall be fire resistant.
30 C.F.R. § 77.1913
Except for crossties, timbers, and other wood products which are permanently installed in slopes and shafts, shall be fire resistant.
30 C.F.R. § 77.1913