1. LawStack
  2. Title 30 - Mineral Resources
  3. Chapter I - MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
  4. Subchapter K - METAL AND NONMETAL MINE SAFETY AND HEALTH
  5. Part 57 - SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
  6. Subpart E - Explosives
  7. Topic - Electric Blasting—Surface and Underground
  8. 30 CFR § 57.6404
30 CFR § 57.6404
Separation of blasting circuits from power source
July 29, 2020
CFR

(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.

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§ 57.6405 Firing devices
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§ 57.6400 Compatibility of electric detonators

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