30 CFR § 75.384
Longwall and shortwall travelways.
(a) If longwall or shortwall mining systems are used and the two
designated escapeways required by §75.380 are
located on the headgate side of the longwall or shortwall, a travelway shall
be provided on the tailgate side of that longwall or shortwall. The
travelway shall be located to follow the most direct and safe practical
route to a designated escapeway.
(b) The route of travel shall be clearly marked.
(c) When a roof fall or other blockage occurs that prevents travel in the
travelway--
(1) Work shall cease on the longwall or shortwall face;
(2) Miners shall be withdrawn from face areas to a safe area outby the
section loading point; and
(3) MSHA shall be notified.
(d) Work may resume on the longwall or shortwall face after the
procedures set out in §§75.215 and
75.222 are implemented.