30 C.F.R. § 77.1101
(c) Plans for escape and evacuation shall include the designation and proper maintenance of adequate means for exit from all areas where persons are required to work or travel including buildings and equipment and in areas where persons normally congregate during the work shift.
(Pub. L. No. 96-511, 94 Stat. 2812 (44 U.S.C. 3501 et seq.))
[36 FR 9364, May 22, 1971, as amended at 36 FR 13143, July 15, 1971; 60 FR 33723, June 29, 1995]