Hearings on H.R. 6621 [H.R. 7265], Department of Energy Authorization Legislation (national Security Programs) for Fiscal Year 1981, Before the Procurement and Military Nuclear Systems Subcommittee of the Committee on Armed Services, House of Representatives, Ninety-sixth Congress, Second Session, Hearings Held March 18, April 16, 17, 29, 30, and June 4, 1980