Books by John J. Henn:
Books in the extended shelves:
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Henn, John J.: Cost evaluation of a metal and mineral recovery process for treating municipal incinerator residues (U.S. Dept. of the Interior, Bureau of Mines, 1971), also by Frank A. Peters (page images at HathiTrust)- Henn, John J.: An Evaluation of an ammonium sulfate leaching process for recovering manganese from Minnesota and Maine resources (U.S. Dept. of the Interior, Bureau of Mines, 1968), also by Ralph C. Kirby, Paul W. Johnson, Frank A. Peters, and United States Bureau of Mines (page images at HathiTrust)
- Henn, John J.: Evaluation of the sulfatization-reduction process for recovering manganese and iron oxide pellets (U.S. Dept. of Interior, Bureau of Mines, 1972), also by Frank A. Peters, Robert A. Clifton, College Park Metallurgy Research Center (U.S.), and United States Bureau of Mines (page images at HathiTrust)
- Henn, John J.: Methods for producing alumina from clay : an evaluation of a lime-soda sinter process (U.S. Dept. of the Interior, Bureau of Mines, 1967), also by Ralph C. Kirby, Paul W. Johnson, Frank A. Peters, and United States Bureau of Mines (page images at HathiTrust)
- Henn, John J.: Methods for producing alumina from clay : an evaluation of two lime sinter processes (U.S. Dept. of the Interior, Bureau of Mines, 1969), also by Frank A. Peters, Earle B. Amey, Paul W. Johnson, and United States Bureau of Mines (page images at HathiTrust)
- Henn, John J.: A review of proposed processes for making rutile substitutes (U.S. Bureau of Mines, 1970), also by James A. Barclay and United States Bureau of Mines (page images at HathiTrust)
- Henn, John J.: Sulfur oxide processes (U.S. Dept. of the Interior, Bureau of Mines, 1968), also by Lindsay D. Norman and Ralph C. Kirby (page images at HathiTrust)
- Henn, John J.: Updated cost evaluation of a metal and mineral recovery process for treating municipal incinerator residues (U.S. Dept. of the Interior, Bureau of Mines :, 1975), also by United States Bureau of Mines (page images at HathiTrust)
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