Except as provided in S 77.1909-1, only permissible explosives and permissible shot-firing units shall be used in sinking shafts and slopes.
053-5 Wyo. Code R. § 77.1909
Except as provided in S 77.1909-1, only permissible explosives and permissible shot-firing units shall be used in sinking shafts and slopes.
053-5 Wyo. Code R. § 77.1909