Sections, act Apr. 26, 1937, ch. 127, §§ 1–22,
50 Stat. 75–91, related to the regulation of interstate commerce of bituminous coal.
Section
849 of this title was amended by acts Apr. 11, 1941, ch. 64, § 1(a),
55 Stat. 134; Apr. 24, 1943, ch. 68,
57 Stat. 68; May 21, 1943, ch. 97,
57 Stat. 82.
Section
852 of this title was added by act Apr. 11, 1941, ch. 64, § 2,
55 Stat. 134.