30 C.F.R. § 7.68 Firing line terminals test.
Title 30 - Mineral Resources
(a) Test procedures. (1) The contact resistance through each firing line terminal shall be determined. (2) A 10-pound pull shall be applied to a No. 18 gauge wire that has been connected to each firing line terminal according to the manufacturer's instructions. (b) Acceptable performance. (1) The contact resistance shall not be greater than 1 ohm. (2) The No. 18 gauge wire shall not become disconnected from either firing line terminal.
Title 30: Mineral Resources
PART 7—TESTING BY APPLICANT OR THIRD PARTY
Subpart D—Multiple-Shot Blasting Units
§ 7.68 Firing line terminals test.
