Pub. L. 83-663, ch. VII, under "Bureau of Mines"
Bureau of Mines
Bureau of Mines construction For an additional amount for “Construction”, $6,000,000, of which not more than $175,000 shall be available for personal services, to remain available until expended. reduction in appropriations The unexpended balance of $19,000 available to the Bureau of Mines for construction of the drainage tunnel at Leadville, Colorado, is to be carried to the surplus fund and covered into the Treasury as miscellaneous receipts immediately upon the approval of this Act.