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 K - Electricity
  7. Subject Group - Surface Only
  8. 30 CFR § 57.12066
30 CFR § 57.12066
Guarding trolley wires and bare powerlines
May 28, 2026
CFR

§ 57.12066 Guarding trolley wires and bare powerlines.

Where metallic tools or equipment can come in contact with trolley wires or bare powerlines, the lines shall be guarded or deenergized.

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§ 57.12065 Short circuit and lightning protection
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§ 57.12067 Installation of transformers

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