30 CFR § 15.22 - Tolerances for performance, wrapper, and specific gravity.

---
identifier: "/us/cfr/t30/s15.22"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 15.22 - Tolerances for performance, wrapper, and specific gravity."
title_number: 30
title_name: "Mineral Resources"
section_number: "15.22"
section_name: "Tolerances for performance, wrapper, and specific gravity."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "B"
subchapter_name: "TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS"
part_number: "15"
part_name: "REQUIREMENTS FOR APPROVAL OF EXPLOSIVES AND SHEATHED EXPLOSIVE UNITS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 957."
regulatory_source: "53 FR 46761, Nov. 18, 1988, unless otherwise noted."
cfr_part: "15"
---


# 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.