30 CFR 57.6405 - Firing devices.
(a) Power sources shall be capable of delivering sufficient current to energize all electric detonators to be fired with the type of circuits used. Storage or dry cell batteries are not permitted as power sources.
(b) Blasting machines shall be tested, repaired, and maintained in accordance with manufacturer's instructions.
Title 30 published on 2014-07-01.
No entries appear in the Federal Register after this date, for 30 CFR Part 57.