CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS (parts 5 to 36) > PART 15—REQUIREMENTS FOR APPROVAL OF EXPLOSIVES AND SHEATHED EXPLOSIVE UNITS > SUBPART B—Requirements for Approval of Explosives (§15.20 to §15.22) > 15.22—Tolerances for performance, wrapper, and specific gravity.

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.