30 CFR Part 57Public Domain
§ 57.20020 — Unattended mine openings
Subpart S — Miscellaneous
Access to unattended mine openings shall be restricted by gates or doors, or the openings shall be fenced and posted.
Public Domain: 30 CFR Part 57 (MSHA Safety and Health Standards — Underground Metal and Nonmetal Mines) is a U.S. government publication and is not subject to copyright. Text extracted from the official source ↗. Figures are served from the eCFR; if one does not load, use the link in its place.