MSHA - Code of Federal Regulations - 30 CFR 15.32
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MSHA - Title 30 CFR
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.