30 CFR § 57.22224 - Auxiliary equipment stations (I-A and III mines).

---
identifier: "/us/cfr/t30/s57.22224"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 57.22224 - Auxiliary equipment stations (I-A and III mines)."
title_number: 30
title_name: "Mineral Resources"
section_number: "57.22224"
section_name: "Auxiliary equipment stations (I-A and III mines)."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "K"
subchapter_name: "METAL AND NONMETAL MINE SAFETY AND HEALTH"
part_number: "57"
part_name: "SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 811."
regulatory_source: "50 FR 4082, Jan. 29, 1985, unless otherwise noted."
cfr_part: "57"
---


# 57.22224 Auxiliary equipment stations (I-A and III mines).

Battery charging stations, compressor stations, pump stations, and transformer stations shall be installed in intake air at locations which are sufficiently ventilated to prevent the accumulation of methane.