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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
[Letter from J. D. Jordon to D. D. Parramore, December 21, 1919]
Letter from J. D. Jordon to Dock Dilworth Parramore discussing an anecdote about a payment receipt that he has also sent.
Date:
December 21, 1919
Creator:
Jordon, J. D.
Object Type:
Letter
System:
The Portal to Texas History