Code of Federal Regulations · Section

§ 18.14 — Identification Of Tested Noncertified Explosion-proof Enclosures

30 C.F.R. § 18.14

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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.

30 C.F.R. § 18.13 30 C.F.R. § 18.15

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