30 C.F.R. § 7.309 Approval marking.
Title 30 - Mineral Resources
Each approved motor assembly shall be identified by a legible and permanent approval plate inscribed with the assigned MSHA approval number and a warning statement as specified in §7.306(d) of this part. The plate shall be securely attached to the motor assembly in a manner that does not impair any explosion-proof characteristics.
Title 30: Mineral Resources
PART 7—TESTING BY APPLICANT OR THIRD PARTY
Subpart J—Electric Motor Assemblies
§ 7.309 Approval marking.
