[Code of Federal Regulations] [Title 30, Volume 1] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 30CFR15.22] [Page 85-86] TITLE 30--MINERAL RESOURCES CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR PART 15--REQUIREMENTS FOR APPROVAL OF EXPLOSIVES AND SHEATHED EXPLOSIVE UNITS--Table of Contents Subpart B--Requirements for Approval of Explosives Sec. 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. [[Page 86]] (c) The apparent specific gravity of the explosive shall be within 7.5 percent of that specified in the approval.