[D8949AAA], Letter from Frank F Amsden to Thomas Alva Edison, January 6th, 1889

Item

Abstract

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"-

Mentions

Date

1889-01-06

Decade

1880-1889

Type

Identifier

D8949AAA

Folder Set

D8949

Title

[D8949AAA], Letter from Frank F Amsden to Thomas Alva Edison, January 6th, 1889

Microfilm ID

126:986

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University

Item sets