Regulations last checked for updates: Oct 17, 2024

Title 30 - Mineral Resources last revised: Oct 03, 2024
All TitlesTitle 30Chapter IPart 7Subpart B - Subpart B—Brattice Cloth and Ventilation Tubing
View all text of Subpart B [§ 7.21 - § 7.31]
§ 7.21 - Purpose and effective date.

This subpart establishes the specific requirements for approval of brattice cloth and ventilation tubing. It is effective August 22, 1988. Applications for approval or extension of approval submitted after August 22, 1989, shall meet the requirements of this part.

authority: 30 U.S.C. 957.
source: 53 FR 23500, June 22, 1988, unless otherwise noted.
cite as: 30 CFR 7.21
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