§57.6404. Separation of blasting circuits from power source.
30 C.F.R. § 57.6404
Switches used to connect the power source to a blasting circuit shall be locked in the open position except when closed to fire the blast.
Lead wires shall not be connected to the blasting switch until the shot is ready to be fired.
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.