30 CFR § 40.5
Termination of designation as representative of miners.
(a) A representative of miners who becomes unable to comply with the
requirements of this part shall file a statement with the appropriate
District Manager terminating his or her designation.
(b) The Mine Safety and Health Administration shall terminate and
remove from its files all designations of representatives of miners which
have been terminated pursuant to paragraph (a) of this section or which are
not in compliance with the requirements of this part. The Mine Safety and
Health Administration shall notify the operator of such termination.