30 CFR Subpart B
Brattice Cloth and Ventilation Tubing
July 29, 2020
§
7.21
Purpose and effective date
§
7.22
Definitions
§
7.23
Application requirements
§
7.24
Technical requirements
§
7.25
Critical characteristics
§
7.26
Flame test apparatus
§
7.27
Test for flame resistance of brattice cloth
§
7.28
Test for flame resistance of rigid ventilation tubing
§
7.29
Approval marking
§
7.30
Post-approval product audit
§
7.31
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