30 CFR § 75.1103-3 - Automatic fire sensor and warning device systems; minimum requirements; general.

---
identifier: "/us/cfr/t30/s75.1103-3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 75.1103-3 - Automatic fire sensor and warning device systems; minimum requirements; general."
title_number: 30
title_name: "Mineral Resources"
section_number: "75.1103-3"
section_name: "Automatic fire sensor and warning device systems; minimum requirements; general."
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"
---


# 75.1103-3 Automatic fire sensor and warning device systems; minimum requirements; general.

Automatic fire sensor and warning device systems installed in belt haulageways of underground coal mines shall be assembled from components which meet the minimum requirements set forth in §§ 75.1103-4 through 75.1103-7 unless otherwise approved by the Secretary.

[37 FR 16545, Aug. 16, 1972]