30 CFR § 75.159
Records of certified and qualified persons.
The operator of each coal mine shall maintain a list of all certified and
qualified persons designated to perform duties under this Part 75.
[35 FR 17890, Nov. 20, 1970, as amended at 47 FR 14706, Apr. 6, 1982; 60 FR 33719, June 29, 1995]