§56.6403. Branch circuits.
30 C.F.R. § 56.6403
If electric blasting includes the use of branch circuits, each branch shall be equipped with a safety switch or equivalent method to isolate the circuits to be used.
At least one safety switch or equivalent method of protection shall be located outside the blast area and shall be in the open position until persons are withdrawn.
Notes, amendments, and revision history
Source
Source: 61 FR 36795, July 12, 1996, unless otherwise noted.
Authority
Authority: 30 U.S.C. 811.
Source
Source: 50 FR 4054, Jan. 29, 1985, unless otherwise noted.