[D8949AAA], Letter from Frank F Amsden to Thomas Alva Edison, January 6th, 1889
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Title
[D8949AAA], Letter from Frank F Amsden to Thomas Alva Edison, January 6th, 1889
Editor's Notes
I am gathering material for a paper on "Concentration of Farm ours" to be read before a a local society, and will be under great obligation to you, if you will kindly furnish me a few details concerning the experiments made on "Part Henry" and "Croton" ones with your "Magnetic seperation and of which a partial account of process in the "From age of Dec. 6th 88. The following is what I want to know! Weight of raw ore used - " " concentrate made "" teachings Time of peration or treatment. Number of times passed through the machines - test of testing a time of the raw ore such as the "Pt. Henry" or the "burtons"-
Author
Recipient
Mentioned
Date
1889-01-06
Type
Folder/Volume ID
D8949-F
Microfilm ID
126:986
Document ID
D8949AAA
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University