[LB006664], Letter from Thomas Alva Edison to John Bullock, December 14th, 1880
Item
Abstract
Your favor of No 6th was duly rec'd. A machine costing [pound]500 will pass through 250 tons of sand per day requiring one man and a pair of horses. The sand must be dry. It dos not separate white quartz sand. The cheapness of the process depends upon the percentage of black sand.
Author
Recipient
Date
1880-12-14
Decade
1880-1889
Type
Subject
Identifier
LB006664
Folder Set
LB006
Title
[LB006664], Letter from Thomas Alva Edison to John Bullock, December 14th, 1880
Microfilm ID
80:436
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University