30 CFR 56.6404 - Separation of blasting circuits from power source.

Regulations last checked for updates: Feb 12, 2026

Title 30 - Mineral Resources last revised: Jan 27, 2026

§ 56.6404 - Separation of blasting circuits from power source.

(a) 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.

(b) Lead wires shall not be connected to the blasting switch until the shot is ready to be fired.

authority: 30 U.S.C. 811.

source: 50 FR 4054, Jan. 29, 1985, unless otherwise noted.

cite as: 30 CFR 56.6404