---
kind: "section"
citation: "30 C.F.R. § 27.5"
title: "30"
number: "27.5"
heading: "Letter of certification."
url: "https://uscodex.org/cfr/30/27.5"
---

# §27.5. Letter of certification.

- (a) Upon completion of investigation of a methane-monitoring system, or component or subassembly thereof, MSHA will issue to the applicant either a letter of certification or a written notice of disapproval, as the case may require If a letter of certification is issued, no test data or detailed results of tests will accompany it. If a notice of disapproval is issued, it will be accompanied by details of the defects, with a view to possible correction. MSHA will not disclose except to the applicant or his authorized representative, any information because of which a notice of disapproval has been issued.
- (b) A letter of certification will be accompanied by an appropriate cautionary statement specifying the conditions to be observed for operating and maintaining the device(s) and to preserve its certified status.

## Notes

### Authority

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

### Source

Source: 31 FR 10607, Aug. 9, 1966, unless otherwise noted.