The Secretary of the Interior is hereby authorized and directed, 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 sulphur in lands belonging to the United States located in the States of Louisiana and New Mexico for a period of not exceeding two years: Provided, That the area to be included in such a permit shall be not exceeding six hundred and forty acres of land in reasonably compact form. (Apr. 17, 1926, ch. 158, § 1, 44 Stat. 301 ; July 16, 1932, ch. 498, 47 Stat. 701 .) Editorial Notes Codification Section was not enacted as part of act Feb. 25, 1920, ch. 85, 41 Stat. 437 , known as the Mineral Leasing Act , which comprises this chapter. Amendments 1932—Act July 16, 1932 , substituted “States of Louisiana and New Mexico” for “State of Louisiana”. CFR Title Parts 30 1217 43 17 , 3040