30 C.F.R. § 57.6603
Current through November 30, 2024
At least a 15-foot air gap shall be provided between the blasting circuit and the electric power source.
30 C.F.R. §57.6603
At least a 15-foot air gap shall be provided between the blasting circuit and the electric power source.
30 C.F.R. §57.6603