The American Mines Syndicate records (1907-1931) consist of one record book holding the corporation's articles of incorporation, by-laws, various meeting minutes, announcements, notices, and lists of stockholders.

The Alfred L. Booth collection on mining companies (1899-1935) consist of a volume of minutes from several mining companies of which Booth was an officer. The records also contain proxy statements and correspondence. Alfred L. Booth was a secretary of various mining companies in Utah and Nevada.

The Bullion Hill Mines Company journal (1917-1937) provides a summary of the financial transactions of the company starting in 1917 to 1937.

The Arthur L. Chaffin papers (circa 1920-1976) contains correspondence, financial records, mining documents, and other records concerning Chaffin's owning and operating of the Chaffin Ferry and his mining career. Arthur L. Chaffin operated the ferry across the Colorado River at Hite, Utah until the site was covered by Lake Powell in the 1960s. He was also extensively involved in mining in southeastern Utah.

The Cottonwood uranium mining oral histories (1970-2002) are composed of transcripts from a project sponsored by the Bureau of Land Management and USDA Forest Service.

The Daly-Judge Mining Company records (1889-1917) contain invoices, receipt of items, and correspondence. The Daly-Judge Mining Company was one of the major operations in Park City in the early 20th century. It was founded in 1900 and soon became one of the Park City district's richest operations.

The Excelsior Mining Company records (1917-1925) consist of assay certificates, smelter returns, and correspondence.

The Great Buffalo Mining Company records (1947-1971) include a variety of papers, such as various legal documents and forms, articles of incorporation, by-laws, correspondence, news clippings, notes, and lease agreements.

The Gaylon W. Hansen papers (1919-1980s) consist of mining records for various Utah mining areas and plant productions, with a large portion concentrating on the Midvale Plant.

The Lincoln Mining Company records (1947-1950) contain correspondence, notices, obituaries, and a blueprint of the Lincoln mining district.

The Little May Mining Company stockholders report (1927) gives descriptions of the various properties mined by the Little May Mining Company for the year 1951. It also provides a balance sheet with records of assets and liabilities, as well as a profit and loss statement for the company in that same year. The map (1951) shows properties in the Tintic and North Tintic mining districts, Utah, and gives a scale of annual production for the years 1869 to 1927.

The Augustus Locke papers (1911-2002) consist mainly of writings and mining reports, written by Locke (1883-1981), for mines and mining areas in Utah and California. Other areas of the western United States, as well as Mexico, are also represented. Locke was a mining and economic geologist.

The New Klondike Mining Company collection (1960, 1963) consist of two maps, each depicting a separate dam and reservoir site relative to the companies workings.

The New Park Mining Company records (1930-1961) contain materials relating to this Utah business. Included in the collection are reports, correspondence, financial information, name lists, bulletins, legislative announcements, invoices, receipts, vouchers, and proxy votes. The New Park Mining Company operated in both Park City and Keetly, Utah.

The Geffery R. Pollock stock certificate collection (1892-1943) consists mainly of certificates for various mining, smelting, and milling companies.

The Stirling Mining Company ledger (1868-1870) details the company's patronage during the late 1860s.

The John Elliott Welsh papers (circa 1910-2000) is composed of mining and geological materials collected by Welsh, a geologist who received his Ph.D. from the University of Utah in 1959. The collection is centered around mining and geology in Utah, Nevada, Colorado, Arizona, New Mexico, Idaho, and Wyoming and includes maps, reports, essays, articles, correspondence, charts, diagrams, and notes. Also included in the collection are some personal papers and class materials.

The Bartlett Wicks papers (1871-1969) concentrate mainly on Wicks (1895-1981), a member of the American Ambulance Field Service, and his experiences during World War I. The collection also contains some materials relating to Joseph R. Walker, prominent Utah banker and businessman. Wicks was related to Walker by marriage.

The Clark L. Wilson papers (1894-1996) contain correspondence, reports, brochures, maps, drawings, business materials, personal materials, and news clippings pertaining to the mining industry in Utah. Included is information regarding Wilson's appointment to serve as a member of the Utah Air Conservation Committee where he represented the mining industry.

The Phillip M. Wright collection (1940s-1970s) consists of materials concerning various mining companies in Utah and surrounding states. Included are correspondence, reports, agreements, prospecting information, and other papers. Phillip M. Wright (b. 1938) is a retired research faculty of the University of Utah.