PRINCIPLE II Once established, corners of the Public Lands are fixed in their monumented positions but the government may survey or resurvey its public lands as it chooses.
A resurvey is a reconstruction of land boundaries and subdivisions accomplished by rerunning and remarking the lines represented in the fieldnote record or on the plat of a previous official survey. The two main objectives of the resurvey are:
The adequate protection of existing rights acquired under the original survey in the matter of location on the earth’s surface.
The proper marking of the boundaries of the remaining public lands.