The Online Books Page

Books by John A. Ruppert:

Books in the extended shelves:

• Ruppert, John A.: Manganese concentrates from open hearth slags by lime-clinkering (Sylvester) process (U.S. Dept. of the Interior, Bureau of Mines, 1952) (page images at HathiTrust)
• Ruppert, John A.: Recovery of alumina from submarginal bauxites. Part 1, Electric furnace production of calcium aluminate and ferro-alloy (U.S. Dept. of the Interior, Bureau of Mines, 1949), also by Hewitt Wilson, Earl F. Nichols, Richard S. Cole, and Charles E. McCarthy (page images at HathiTrust)
• Ruppert, John A.: Recovery of tin from hardhead by filtration (U.S. Dept. of the Interior, Bureau of Mines, 1964), also by P. M. Sullivan (page images at HathiTrust)
• Ruppert, John A.: Recovery of zinc from galvanizers' dross and zinc-base die-cast scrap by filtration (U.S. Dept. of the Interior, Bureau of Mines, 1964), also by P. M. Sullivan (page images at HathiTrust)
• Ruppert, John A.: Refining iron-contaminated zinc by filtration and centrifugation (U.S. Dept. of the Interior, Bureau of Mines, 1967), also by P. M. Sullivan and United States Bureau of Mines (page images at HathiTrust)
• Ruppert, John A.: Refining zinc-base die-cast scrap using low-cost fluxes (U.S. Dept. of Interior, Bureau of Mines, 1969), also by D. Montagna and United States Bureau of Mines (page images at HathiTrust)

Find more by John A. Ruppert at your library, or elsewhere.