30 CFR § 18.13
Each certified component shall be identified by a certification plate
attached to the component in a manner acceptable to MSHA. The method of
attachment shall not impair any explosion-proof characteristics of the
component. The plate shall be of serviceable material, acceptable, to MSHA,
and shall contain the following:
Certified as complying with the applicable requirements of 30 CFR
Certification No. -------.
The blank spaces shall be filled with appropriate designations. Inclusion of
the information on a company name plate will be permitted provided the plate
is made of material acceptable to MSHA.