Inquiry into strategic and critical material stockpiles of United States. hearings before National Stockpile and Naval Petroleum Reserves Subcommittee, 87th Congress, 2d session. pt. 8. Nickel contracts with Falconbridge, International Nickel Co., National Lead Co., tungsten, tungsten contracts with South Korea, and Wah Chang, and titanium, Nov. 13-29, 1962.