MSHA - Code of Federal Regulations - 30 CFR 15.6
30 CFR § 15.6
Issuance of approval.
(a) MSHA will issue an approval or a notice of the reasons for
denying approval after completing the evaluation and testing provided for by
(b) An applicant shall not advertise or otherwise represent an
explosive or sheathed explosive unit as approved until MSHA has issued an