MSHA - Code of Federal Regulations - 30 CFR 15.22
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MSHA - Title 30 CFR
30 CFR § 15.22
Tolerances for performance, wrapper and specific gravity.


(a) The rate of detonation of the explosive shall be within ±15 percent of that specified in the approval.

(b) The weight of wrapper per 100 grams of explosive shall be within ±2 grams of that specified in the approval.

(c) The apparent specific gravity of the explosive shall be within ±7.5 percent of that specified in the approval.

Subpart C--Requirements for Approval of Sheathed Explosive Units or Other Explosive Units Designed to be Fired Outside the Confines of a Borehole