[D8949ABN], Letter from Wythe Lead and Zinc Mine Co, John C Raper to Thomas Alva Edison, July 17th, 1889
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Title
[D8949ABN], Letter from Wythe Lead and Zinc Mine Co, John C Raper to Thomas Alva Edison, July 17th, 1889
Editor's Notes
I happen to notice in a Lynchburg paper that you have invented an ore seperator to separate iron from accompany gangue - In our mine here we have Galera zinc and concentrate zinc ores blend and brown hematite iron ore blended together and we can make a very good separation of the ores with exception of the carbonate and silicate of zinc the specific gravity the zinc anda iron ore being so nearly equaly we cannot make a perfect separation on our rigs. Do you think your magnetic treatment would make a perfect separation of the carbonate and silicates of zinc from the brown hematic iron ores. I am hoping t ohear from you at an early date we are yours truly
Recipient
Date
1889-07-17
Type
Subject
Folder/Volume ID
D8949-F
Microfilm ID
126:1024
Document ID
D8949ABN
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University