30 U.S.C. § 261

Prospecting permits; lands included; acreage

The Secretary of the Interior is hereby authorized, under such rules and regulations as he may prescribe, to grant to any qualified applicant a prospecting permit which shall give the exclusive right to prospect for chlorides, sulphates, carbonates, borates, silicates, or nitrates of sodium, in lands belonging to the United States for a period of not exceeding two years: Provided , That the area to be included in such a permit shall not exceed two thousand five hundred and sixty acres of land in reasonably compact form.

( Feb. 25, 1920, ch. 85, § 23 , 41 Stat. 447 ; Dec. 11, 1928, ch. 19 , 45 Stat. 1019 .)