Minn. Stat. § 505.31: ENTRY UPON LAND; NOTICE.

It is lawful for any surveyor to enter upon any land for the purpose of locating existing survey or reference monuments or landmarks, provided, however, such surveyor shall be responsible to the landowner for any and all damages as a result of such entry, and no surveyor may enter upon any land unless first notifying the owner or occupant of the intended entry for such purpose.