US Codex
C.F.R.
Legal Codes
United States Code
U.S.C.
Federal statutory law
Code of Federal Regulations
C.F.R.
Federal administrative regulations (eCFR)
Browse by date
View an earlier version
Go
Latest
2026-08-27
Browse all versions by date
Notes
Notes
Browse by date
About
Privacy
MCP
…
/
Code of Federal Regulations
/
Title 30
/
Chapter I — Mine Safety and Health Administration, Department of Labor
/
Subchapter B — Testing, Evaluation, and Approval of Mining Products
/
Part 27 — Methane-Monitoring Systems
‹
Pt. 23
Telephones and Signaling Devices
Pt. 28
Fuses for Use with Direct Current in Providing Short-Circuit Protection for Trailing Cables in Coal Mines
›
Part 27 — Methane-Monitoring Systems
Search Part 27 full text →
Subpt. A
General Provisions
§§27.1 to 27.12
Subpt. B
Construction and Design Requirements
§§27.20 to 27.24
Subpt. C
Test Requirements
§§27.30 to 27.41
‹
Pt. 23
Telephones and Signaling Devices
Pt. 28
Fuses for Use with Direct Current in Providing Short-Circuit Protection for Trailing Cables in Coal Mines
›
Add note
Incoming references
Copy permalink
Cite
Cite this provision
×
Format
Bluebook
ALWD
APA
MLA
Include provision text
Copy citation
Incoming references
×
Open in new tab
✕