[D8034ZDV], Letter from Juan B Mainero to Thomas Alva Edison, July 24th, 1880
https://edisondigital.rutgers.edu/document/D8034ZDV
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Title
[D8034ZDV], Letter from Juan B Mainero to Thomas Alva Edison, July 24th, 1880
Editor's Notes
Partner in company working Columbia SA auriferous silver mine. Using German-english (smelting, etc) method can't make it pay below $1/100 lbs. How about your process? Marg: the usual; process for black sand, hydro placer mines.
Author
Recipient
Date
1880-07-24
Type
Subject
Folder/Volume ID
D8034-F
Microfilm ID
54:799
Document ID
D8034ZDV
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University