Minn. Stat. § 94.46: INJURY TO SIGNAL.

Whoever willfully defaces, injures, or removes any signal, monument, building, or other property of the United States erected or used in the coast and geodetic survey, pursuant to the laws of the United States, shall forfeit not exceeding $50 for each offense, and shall be liable to the United States for all damages sustained by it in consequence thereof, to be recovered in a civil action.