43 C.F.R. § 421.4 Disturbances.
Title 43 - Public Lands: Interior
The following conduct is prohibited: That which is disorderly; which creates loud and unusual noise; which obstructs the usual use of roadways, parking lots, observation points, entrances, foyers, corridors, walkways, elevators, stairways, offices, and other work areas; which otherwise tends to impede or disturb the general public in viewing the property or obtaining the services available thereon; or which tends to impede or disturb public or contractor employees in the performance of their duties.
Title 43: Public Lands: Interior
PART 421—RULES OF CONDUCT AT HOOVER DAM
§ 421.4 Disturbances.
