30 C.F.R. § 7.25 Critical characteristics.
Title 30 - Mineral Resources
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.
Title 30: Mineral Resources
PART 7—TESTING BY APPLICANT OR THIRD PARTY
Subpart B—Brattice Cloth and Ventilation Tubing
§ 7.25 Critical characteristics.
