30 CFR 57.6404 - Separation of blasting circuits from power source.

§ 57.6404 Separation of blasting circuits from power source.

(a) Switches used to connect the power source to a blasting circuit shall be locked in the open position except when closed to fire the blast.

(b) Lead wires shall not be connected to the blasting switch until the shot is ready to be fired.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

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United States Code

Title 30 published on 12-Jul-2017 03:32

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 30 CFR Part 57 after this date.

  • 2017-05-22; vol. 82 # 97 - Monday, May 22, 2017
    1. 82 FR 23139 - Examinations of Working Places in Metal and Nonmetal Mines
      GPO FDSys XML | Text
      DEPARTMENT OF LABOR, Mine Safety and Health Administration
      Final rule; delay of effective date.
      The effective date of the rule published January 23, 2017 (82 FR 7680) is delayed to October 2, 2017.
      30 CFR Parts 56 and 57