30 CFR § 75.800-4 - Testing, examination, and maintenance of circuit breakers; record.

---
identifier: "/us/cfr/t30/s75.800-4"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 75.800-4 - Testing, examination, and maintenance of circuit breakers; record."
title_number: 30
title_name: "Mineral Resources"
section_number: "75.800-4"
section_name: "Testing, examination, and maintenance of circuit breakers; record."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "O"
subchapter_name: "COAL MINE SAFETY AND HEALTH"
part_number: "75"
part_name: "MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 811, 813(h), 957."
regulatory_source: "35 FR 17890, Nov. 20, 1970, unless otherwise noted."
cfr_part: "75"
---


# 75.800-4 Testing, examination, and maintenance of circuit breakers; record.

(a) *Recordkeeping.* The operator shall make a record of each test, examination, repair, or adjustment of all circuit breakers protecting high-voltage circuits which enter any underground area of the mine.

(b) *Record security.* These records shall be made in a secure book that is not susceptible to alteration or electronically in a computer system so as to be secure and not susceptible to alteration.

(c) *Retention and access.* These records shall be retained at a surface location at the mine for at least one year and shall be made available to authorized representatives of the Secretary, the representative of miners, and other interested persons.

[64 FR 43287, Aug. 10, 1999]