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Electronic Code of Federal Regulations

e-CFR data is current as of January 23, 2020

Title 30Chapter ISubchapter BPart 23


TITLE 30—Mineral Resources

CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR

SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS

PART 23—TELEPHONES AND SIGNALING DEVICES

rule
§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.

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