---
kind: "section"
citation: "30 C.F.R. § 7.25"
title: "30"
number: "7.25"
heading: "Critical characteristics."
url: "https://uscodex.org/cfr/30/7.25"
---

# §7.25. Critical characteristics.


A sample of each batch or lot of brattice cloth and ventilation tubing shall be flame tested or a sample of each batch or lot of the materials that contribute to the flame-resistance characteristic shall be inspected or tested to ensure that the finished product will meet the flame-resistance test.


## Notes

### Authority

Authority: 30 U.S.C. 957.

### Source

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