Educational grants for mineral research: hearing before the Subcommittee on Minerals, Materials, and Fuels of the Committee on Interior and Insular Affairs, United States Senate, Eighty-eighth Congress, first session, on S. 1166, a bill to authorize the Secretary of the Interior to enter into contracts and make grants for research and development in furtherance of the purpose of the Act of May 16, 1910 (36 Stat. 369 ; 30 U.S.C. 1, 3, 5, and 7) as amended and supplemented, August 29, 1963.