---
kind: "section"
citation: "30 C.F.R. § 18.14"
title: "30"
number: "18.14"
heading: "Identification of tested noncertified explosion-proof enclosures."
url: "https://uscodex.org/cfr/30/18.14"
---

# §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.


## Notes

### Amendments

[33 FR 4660, Mar. 19, 1968, as amended at 43 FR 12314, Mar. 24, 1978]

### Authority

Authority: 30 U.S.C. 957, 961.

### Source

Source: 33 FR 4660, Mar. 19, 1968, unless otherwise noted.

### Amendments

[33 FR 4660, Mar. 19, 1968, as amended at 43 FR 12314, Mar. 24, 1978]