Collections

The CF&I Steel Corporation Records contain approximately 6,000 cubic feet of manuscript materials related to the life cycle of the Pueblo, Colorado steel mill, more than 60 CF&I mines, and other related CF&I business operations. Also included are approximately 150 motion picture films, 100,000 photographs, over 30,000 maps and drawings, company publications, and thousands of ledgers. The archival collection spans CF&I’s 121 year history (1872 to 1993), illustrating every aspect of the company’s operations.

Much of the core CF&I collection is processed only at a basic box level. More detailed processing has progressed on specific record groups, including Industrial Relations, Mines and Quarries, and Administration. We are currently processing additional portions of the collection.

Searching Collections

Finding aids for the core CF&I collection can be found on the Rocky Mountain Online Archive. Please note: Steelworks Archives finding aids are listed under Bessemer Historical Society on this site. 

To search the online catalog containing individual photographs, ledgers, maps and drawings go to our online catalog.

In addition to the core CF&I collection, the archives also houses numerous donor collections.

Some material is not yet searchable online. Please contact the Archives for assistance.

Diavolo Coals map

CF&I Diavolo brand coal mine map, 1927