Any prospecting permit issued under this subchapter may be extended by the Secretary of the Interior for a period not exceeding two years, upon a showing of satisfactory cause.
(Feb. 7, 1927, ch. 66, §7, as added May 7, 1932, ch. 174, 47 Stat. 151.)
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.