[LB006752], Letter from Thomas Alva Edison to James Arthur, January 4th, 1881
https://edisondigital.rutgers.edu/document/LB006752
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Title
[LB006752], Letter from Thomas Alva Edison to James Arthur, January 4th, 1881
Editor's Notes
Your favor of the 4th ult was duly rec'd. The process you refer to is for working auriferous iron or black sand dry. The machine costs [pound] 500 and the capacity is 150 tons daily at a cost of about [pound]2 outside of carting sand to the apparatus--which works up to 90&. Royalty charged is 1/2 pense per ton.
Author
Recipient
Date
1881-01-04
Type
Folder/Volume ID
LB006-F
Microfilm ID
80:459
Document ID
LB006752
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University