The Secretary of Labor shall prescribe rules and regulations for the enforcement of sections 9 and 9a of this title. (Apr. 13, 1934, ch. 118, § 3, 48 Stat. 583 ; Apr. 11, 1935, ch. 59, 49 Stat. 154 ; June 15, 1937, ch. 349, 50 Stat. 259 ; Apr. 15, 1939, ch. 71, 53 Stat. 581 ; Aug. 7, 1946, ch. 770, § 1(16), 60 Stat. 867 .) Editorial Notes Codification This section and sections 9 and 9a of this title comprised sections 1 to 3 of act Apr. 13, 1934 , which were to terminate one year after Apr. 13, 1934 , pursuant to section 4 of act Apr. 13, 1934 , set out as a Codification note under section 9 of this title . Such sections were temporarily extended by acts Apr. 11, 1935 , and June 15, 1937 , and were made permanent by act Apr. 15, 1939 . Amendments 1946—Act Aug. 7, 1946 , repealed provisions requiring Secretary of the Interior to make annual reports to Congress .