§57.6603. Air gap.
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.
Notes, amendments, and revision history
Source
Source: 61 FR 36801, July 12, 1996, unless otherwise noted.
Authority
Authority: 30 U.S.C. 811.
Source
Source: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.