MSHA - Code of Federal Regulations - 30 CFR 28.20
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MSHA - Title 30 CFR
30 CFR § 28.20
Certificates of approval; scope of approval.


(a) MSHA shall issue certificates of approval pursuant to the provisions of this subpart only for individual, completely fabricated fuses which have been examined, inspected, and tested as specified in §28.10, and have been evaluated by MSHA to ensure that they meet the minimum requirements prescribed in this part.

(b) MSHA shall not issue an informal notification of approval.