[D8034ZCY], Letter from D H McFann to Thomas Alva Edison, June 21st, 1880
https://edisondigital.rutgers.edu/document/D8034ZCY
→ View document with UniversalViewer
→ View document on Archive.org
→ Re-use this digital object via a IIIF manifest
Title
[D8034ZCY], Letter from D H McFann to Thomas Alva Edison, June 21st, 1880
Editor's Notes
Possible to make metal plate to attract precious metals from sand & gravel? For platinum? Marg: "Magnets only attract iron sand that is black sand. We have a machine that works the goldout of 150 tonsd of pure black sand per day. Platinum is worth $3 per oz. I will take all you have at the price. Send sample."
Author
Recipient
Date
1880-06-21
Type
Subject
Folder/Volume ID
D8034-F
Microfilm ID
54:755
Document ID
D8034ZCY
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University