§56.6304. Primer protection.
30 C.F.R. § 56.6304
Tamping shall not be done directly on a primer.
Rigid cartridges of explosives or blasting agents that are 4 inches (100 millimeters) in diameter or larger shall not be dropped on the primer except where the blasthole contains sufficient depth of water to protect the primer from impact. Slit packages of prill, water gel, or emulsions are not considered rigid cartridges and may be drop loaded.
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.