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Innovations in Copper Leaching Employing Ferric Sulphate-Sulphuric Acid
From Introduction: "The Bureau of Mines has attempted to develop a cheap and efficient solvent that would especially meet the requirements of smaller plants. (See Bibliography). A method of producing this solution from sulphurous products and waste liquors was developed by the bureau and tried successfully on a test-plant scale at the Southwest Experiment Station in cooperation with the department of mining and metallurgy, University of Arizona, Tuscon, Ariz."
Date:
1930
Creator:
Keyes, Harmon E.
Object Type:
Report
System:
The UNT Digital Library
Santa Fe 3758 on "The Scout"
A photograph print showing Santa Fe 3758, 4-8-4, on passenger Train No. 2, "The Scout", approaching Nelson, AZ, on a dark, snowy day.
Date:
December 31, 1931
Creator:
Schick, Joseph
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bulletin of the Texas Archeological and Paleontological Society, Volume 6, September 1934
Annual journal of the Texas Archeological and Paleontological Society documenting research and findings of members as well as activities of the organization.
Date:
September 1934
Creator:
Texas Archeological and Paleontological Society
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History