U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
Except for crossties, timbers, and other wood products which are permanently installed in slopes and shafts, shall be fire resistant.
Regulations most recently checked for updates: Aug 28, 2025
Except for crossties, timbers, and other wood products which are permanently installed in slopes and shafts, shall be fire resistant.