30 CFR § 1.3
Use of letters and acronym MSHA.
The letters and acronym MSHA may be used and substituted for the words "Mine
Safety and Health Administration" in correspondence, rules, regulations, and
in certificates of approval, approval plates, labels, and markings prescribed
by the Mine Safety and Health Administration to designate and denote
equipment, devices, and apparatus approved as "permissible" and suitable for
use in mines under the applicable parts of Chapter I of this title, and in
such other documents, publications, and pamphlets, and on signs, clothing and
uniforms, and offices of the Administration and at such times and locations
as may be deemed appropriate by the Assistant Secretary of Labor for Mine
Safety and Health.
[39 FR 23997, June 28, 1974, as amended at 43 FR 12312, Mar. 24, 1978]