Ariz. Admin. Code § 11-1-1860
Current through Register Vol. 30, No. 50, December 13, 2024
Blasts in gassy mines shall be initiated electrically, and multiple-shot blasts shall be initiated only with millisecond-delay detonators. Permissible blasting units of capacity suitable for the number of holes in a round to be blasted shall be used unless the round is fired from the surface when all men are out of the mine.
Ariz. Admin. Code § R11-1-1860