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Title 30: Mineral Resources
CHAPTER I: MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
SUBCHAPTER O: COAL MINE SAFETY AND HEALTH
PART 75: MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES
Subpart J: Underground Low- and Medium-Voltage Alternating Current Circuits
75.903 - Disconnecting devices.
[Statutory Provisions]
Disconnecting devices shall be installed in conjunction with the circuit breaker to provide visual evidence that the power is disconnected.
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