Pub. L. 94-423, tit. VI, sec. 601

Sec. 601. The Secretary of the Interior is authorized to rehabilitate the federally owned Leadville Mine drainage tunnel, Lake County, Colorado, by installing a concrete-lined, structural steel-supported, eight-foot-diameter, horseshoe-shaped tunnel section extending for an approximate distance of one thousand feet inward, from the portal of said tunnel or for the distance required to enter structurally competent geologic formations. The Secretary is further authorized to maintain the rehabilitated tunnel in a safe condition and to monitor the quality of the tunnel discharge.