Code of Federal Regulations Title 43. Public Lands:  Interior § 43.3471.1–2 Land description in lease

(a) All unsurveyed lands in a public land survey system state shall have a cadastral survey performed at Federal Government expense before a lease or license to mine may be issued, except for areas covered by a skeleton survey, i.e. Utah and Alaska, and the lease when issued shall be described by legal subdivision (section, township, and range), or aliquot part thereof (but no less than 10 acres).

(b) If the land is acquired land in a non-public land state, the land in the lease shall be described in the same manner provided for lease applications under § 3471.1–1(d)(2) of this title.