1946—Act Aug. 14, 1946, amended section generally to provide for investigations as to the effect of sewage and industrial waste on wildlife.

“United States Bureau of Mines” substituted in text for “Bureau of Mines” pursuant to section 10(b) of Pub. L. 102–285, set out as a note under section 1 of Title 30, Mineral Lands and Mining. For provisions relating to closure and transfer of functions of the United States Bureau of Mines, see Transfer of Functions note set out under section 1 of Title 30.

See Transfer of Functions note set out under section 661 of this title.