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Concentration of Ores.
Patent for improvements to recovering ore using flotation methods.
Date:
December 17, 1918
Creator:
Wiser, Oba
Object Type:
Patent
System:
The Portal to Texas History
[Correspondence Between San Simon Cattle Company and Dr. E. W. Johnson, February 23, 1918]
Correspondence between San Simon Cattle Co. and Dr. E. W. Johnson discussing making a payment of ten dollars to the order of J. D. Jordan. The correspondence is written on the back of a torn-open envelope that was once addressed to Mr. J. D. Jordan from attorneys Wilson and Walton.
Date:
February 24, 1918
Creator:
San Simon Cattle and Canal Company
Object Type:
Letter
System:
The Portal to Texas History
Prospecting and Mining of Copper Ore at Santa Rita, New Mexico
Report discussing techniques for the mining of large masses of low-grade ores such as though found in Santa Rita, NM. It is hoped that a study of the methods used at Santa Rita will help engineers in other industries who may have to handle large masses of material.
Date:
September 1916
Creator:
MacDonald, Donald F. & Enzian, Charles
Object Type:
Report
System:
The UNT Digital Library