---
kind: "section"
citation: "30 C.F.R. § 7.24"
title: "30"
number: "7.24"
heading: "Technical requirements."
url: "https://uscodex.org/cfr/30/7.24"
---

# §7.24. Technical requirements.

- (a) Brattice cloth shall be flame resistant when tested in accordance with the flame resistance test in [§ 7.27](/cfr/30/7.27.md).
- (b) Flexible ventilation tubing shall be manufactured using an MSHA-approved brattice cloth. If a supporting structure is used, it shall be metal or other noncombustible material which will not ignite, burn, support combustion or release flammable vapors when subjected to fire or heat.
- (c) Rigid ventilation tubing shall be flame resistant when tested in accordance with the flame resistance test in [§ 7.28](/cfr/30/7.28.md).

## Notes

### Authority

Authority: 30 U.S.C. 957.

### Source

Source: 53 FR 23500, June 22, 1988, unless otherwise noted.