The Eugene Callaghan papers (1924-1988) consist of materials documenting Callaghan's professional career. Included are correspondence, notes, reports, maps, class materials, and scrapbooks. Eugene Callaghan (1904-1990) was a geologist for the United States Geological Survey. He conducted several investigations of various territories around Utah and its surrounding states.
The Calumet Mining and Refining Company Records contain information about several mining plants throughout Utah and Nevada. It also has information about mined materials and mining methods. Many of the materials also pertain to the Combined Metals Reduction Company.