Scope and Contents

This series contains the personal materials of Otto Duke, including personal research and reading, political papers and diagrams, personal photos, sheets from a pocket notebook, invitations, business cards, name tags, travel information, newspapers (Utah, Alaska, Oklahoma), pamphlets, and miscellaneous other materials. They are dated from 1920 to 1975.

Scope and Contents This series includes research, publications, and developement on many engineering topics including coal carbonization & coal, smelter descriptions, mining & engineering, conveyors, power plant engineering(photoelectrics, electricity by Kramer, oil from coal or shale, motors & control), substations: transmission & distribution, heat balance, tests & performances, boiler room equipment, mines & mining pamphlet, boiler tests, power, flow meters, hydrotic equipment, plant...

Scope and Contents

Includes diagrams and materials dealing with projects for the F. C. Torkelson Co., such as expense records, operating costs, Bailey Meter Co., limestone crushing plant, electric mine hoists, Kennecott Mill reports, Ferron Canyon Coal job, Hayden Smelter (Arizona), Smelter emissions control, and more from 1946-1975.

Scope and Contents

Maps, diagrams, blueprints, and other engineering materials dealing with various companies, including USS Lead Refinery, Inc, Combined Metals Reduction Company, Kennecott Copper Corp., Utah Power and Light Company, American Zinc, Lead, and Smelting Co., Denver Equipment Co., Climax Molybdenum Co., Great Western Engineers, Inc., Allison Steel Manufacturing Company, American Smelting and Refining Company, Link-Belt Company, M. H. Detrick Co., and others. Dated 1917 to 1973.