Minn. Stat. § 505.23: WHERE COORDINATES RECORDED.

No coordinates based on the Minnesota Coordinate System, purporting to define the position of a point on a land boundary, shall be presented to be recorded in any public land records or deed records unless such point is within one-half mile of a horizontal control station established in conformity with the standards prescribed in section 505.20; provided that said one-half mile limitation may be modified by a duly authorized state agency to meet local conditions.