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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 30 - Mineral Resources |
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Chapter I - Mine Safety and Health Administration, Department of Labor |
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SubChapter B - Testing, Evaluation, and Approval of Mining Products |
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Part 23 - Telephones and Signaling Devices |
§ 23.1 - Purpose. |
§ 23.2 - Definitions. |
§ 23.3 - Application procedures and requirements. |
§ 23.4 - [Reserved] |
§ 23.5 - Conditions governing investigations. |
§ 23.6 - General requirements for approval. |
§ 23.7 - Specific requirements for approval. |
§ 23.8 - Inspection and tests. |
§ 23.9 - Special requirements for complete devices. |
§ 23.10 - Material required for MSHA records. |
§ 23.11 - How approvals are granted. |
§ 23.12 - Wording, purpose, and use of approval plate. |
§ 23.13 - Withdrawal of approval. |
§ 23.14 - Instructions for handling future changes in design. |