Paper, 93d Congress. 33. Hearings on H.R. 9429 and S. 2166, Disposal of opium from national stockpile, and various bills on disposal of copper, aluminum, silicon carbide, zinc, and molybdenum from National and supplemental stockpile before Subcommittee 3, 93d Congress, 1st session, Sept. 26-Dec. 6, 1973.