Abstract Records, 1933-1961, of patents issued to Michigan College of Mining and Technology in Houghton, Michigan relating to copper extrusion research conducted by university faculty members from the Department of Mechanical Engineering: Rex R. Seeber, Griffith N. Thresher and Almon P. Young. From 1934-1956 the extrusion research known as the Copper Fittings Research Project resulted in the issuance of 3 U.S. Patents, 15 foreign patents and 2 U.S. patent applications. Records include correspondence,...

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Patents, 1896-1943, by various inventors and assignees pertaining to copper mining and copper smelting inventions granted by the United States. Includes specifications and drawings.

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Collection, 1929-1983, of Geno Lucchesi, a long-time resident of South Range, Michigan. Includes correspondence, pilot log books, pilot instruction manuals, airplane maintenance parts catalogs, Safety Shield financial and business records, clippings, photographs and other printed ephemera as well as an album containing a song written by Geno Lucchesi, audio tapes with interviews and buttons from aviation and firemen events.

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Collection, 1911-1978, compiled by Louis Koepel, a resident and historian of Michigan's Copper Country. Includes Securities and Exchange Commission filings for the merger of the Copper Range Company with Louisiana Land and Exploration Company, SEC paperwork for the Calumet and Hecla, Inc. sale to Universal Oil Products, auction catalogs for disposition of the W. Parsons Todd Collection, parts catalogs, patents. Also includes blueprints for the J. P. Cooper house in East Hancock, Michigan.

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Patents, 1906, issued to Thomas R. Hasley of Houghton, Michigan. The patents are for a new and improved railway tie that is described as being cheap to manufacture, relatively light yet strong enough to make it easily handled without the danger of breaking.

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Patents, 1943-1944, issued to John Murray Riddell for improvements to mine shaft sinking apparatus. Includes patent issued by the United States in 1943 as well as a patent issued by the Union of South Africa, a dominion of Great Britain.

Abstract Papers, 1949-1983, of William A. Hockings, an assistant professor of mineral research and assistant director of the Institute of Mineral Research at the Michigan College of Mining and Technology (later Michigan Technological University) in Houghton, Michigan. Includes Hockings' thesis, patents held by Hockings and research material on mass flow balances, cyanide leaching (White Pine), ammonia leaching (stamp sands), reduction nucleation and various other projects connected with the Institute...