Cal. Code Regs. tit. 19 § 1570.4
Current through Register 2024 Notice Reg. No. 50, December 13, 2024
Explosives shall not be extracted from a hole that has once been charged or has misfired unless it is impossible to detonate the unexploded charge by insertion of a fresh additional primer. If extraction is necessary it shall be done under the personal supervision of the blasting supervisor.
Cal. Code Regs. Tit. 19, § 1570.4