[Committee hearings] serials, 81st Congress. 1. Amending Contract settlement act as to compensation of persons contracting to deliver strategic minerals, hearings before subcommittee no. 4, 80th Congress. 2d session, on H. R. 1285, H. R. 4928, H. R. 5040, and H. R. 5192, Mar. 12 and 19, 1948.