30 CFR 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.
Source:
Schedule 9B, 4 FR 1555, Apr. 11, 1939, unless otherwise noted.
Title 30 published on 2012-07-01
no entries appear in the Federal Register after this date.
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