CFR
- Title 1 - General Provisions
- Title 2 - Grants and Agreements
- Title 3 - The President
- Title 4 - Accounts
- Title 5 - Administrative Personnel
- Title 6 - Domestic Security
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- Title 16 - Commercial Practices
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- Title 20 - Employees' Benefits
- Title 21 - Food and Drugs
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- Title 47 - Telecommunication
- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
75.900-4—Testing, examination, and maintenance of circuit breakers; record.
The operator of any coal mine shall maintain a written record of each test, examination, repair, or adjustment of all circuit breakers protecting low- and medium-voltage circuits serving three-phase alternating current equipment used in the mine. Such record shall be kept in a book approved by the Secretary.
Code of Federal Regulations
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