[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: 30CFR15.32] [Page 87] 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 C--Requirements for Approval of Sheathed Explosive Units or Other Explosive Units Designed to be Fired Outside the Confines of a Borehole Sec. 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.