MSHA - Code of Federal Regulations - 30 CFR 15.32
30 CFR § 15.32
Tolerances for weight of explosive, sheath, wrapper, and specific gravity.
(a) The weight of the explosive, the sheath, and the outer covering
shall each be within ±7.5 percent of that specified in the approval.
(b) The ratio of the weight of the sheath to that of the explosive
shall be within ±7.5 percent of that specified in the approval.
(c) The specific gravity of the explosive and sheath shall be within
±7.5 percent of that specified in the approval.
