30 CFR Part 57Public Domain
§ 57.11052 — Refuge areas
Subpart J — Travelways and Escapeways
Refuge areas shall be—
(a)Of fire-resistant construction, preferably in untimbered areas of the mine;
(b)Large enough to accommodate readily the normal number of persons in the particular area of the mine;
(c)Constructed so they can be made gastight; and
(d)Provided with compressed air lines, waterlines, suitable handtools, and stopping materials.
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.