§75.1319. Weight of explosives permitted in boreholes in bituminous and lignite mines.
30 C.F.R. § 75.1319
The total weight of explosives loaded in any borehole in bituminous and lignite mines shall not exceed 3 pounds except when blasting solid rock in its natural deposit.
The total weight of explosives loaded in a borehole less than 6 feet deep in bituminous and lignite mines shall be reduced by 1/2 pound for each foot of borehole less than 6 feet.
Notes, amendments, and revision history
Source
Source: 53 FR 46786, Nov. 18, 1988, unless otherwise noted.
Authority
Authority: 30 U.S.C. 811, 813(h), 957.
Source
Source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.