Regulations last checked for updates: May 17, 2024

Title 30 - Mineral Resources last revised: May 15, 2024
§ 18.14 - Identification of tested noncertified explosion-proof enclosures.

An enclosure that meets all applicable requirements of this part, but has not been certified by MSHA, shall be identified by a permanent marking on it in a conspicuous location. The design of such marking shall consist of capital letters USMSHA not less than 1/4 inch in height, enclosed in a circle not less than 1 inch in diameter.

[33 FR 4660, Mar. 19, 1968, as amended at 43 FR 12314, Mar. 24, 1978]
authority: 30 U.S.C. 957,961
source: 33 FR 4660, Mar. 19, 1968, unless otherwise noted.
cite as: 30 CFR 18.14