18 C.F.R. § 1b.15 Non-compliance with compulsory processes.
Title 18 - Conservation of Power and Water Resources
In cases of failure to comply with Commission compulsory processes, appropriate action may be initiated by the Commission or the Attorney General, including but not limited to actions for enforcement or the imposition of penalties.
Title 18: Conservation of Power and Water Resources
PART 1b—RULES RELATING TO INVESTIGATIONS
§ 1b.15 Non-compliance with compulsory processes.

