30 CFR § 56.4330
Firefighting, evacuation, and rescue procedures.
(a) Mine operators shall establish emergency firefighting,
evacuation, and rescue procedures. These procedures shall be coordinated in
advance with available firefighting organizations.
(b) Fire alarm procedures or systems shall be established to promptly
warn every person who could be endangered by a fire.
(c) Fire alarm systems shall be maintained in operable condition.