30 CFR § 7.1
Purpose and scope.
This part sets out requirements for MSHA approval of certain equipment and
materials for use in underground mines whose product testing and evaluation
does not involve subjective analysis.These requirements apply to products
listed in the subparts following this Subpart A. After the dates specified in
the following subparts, requests for approval of products shall be made in
accordance with this Subpart A and the applicable subpart.