Statutes, codes, and regulations
Code of Federal Regulations
Title 30 - MINERAL RESOURCESChapter I - MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABORSubchapter B - TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTSPart 7 - TESTING BY APPLICANT OR THIRD PARTY
Subpart D - MULTIPLE-SHOT BLASTING UNITS
Section 7.65 - Critical characteristics

30 C.F.R. § 7.65

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Current through November 30, 2024
Section 7.65 - Critical characteristics

The following critical characteristics shall be inspected or tested on each blasting unit to which an approval marking is affixed:

(a) The output current.
(b) The voltage cut-off time.
(c) The components that control voltage and current through each making and breaking electric contact.
(d) Operation of the visual indicator and the firing switch.

30 C.F.R. § 7.65