The United States Bureau of Mines is further authorized, under the general direction of the Secretary of the Interior, to erect such plants, construct and purchase such machinery and equipment, and to take such other steps as it may deem necessary and proper to effectuate the purposes of section 4c of this title.
30 U.S. Code § 4d - Plants, machinery, and equipment
“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 this title. 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 this title.