[LB012433], Letter from Thomas Alva Edison to Robert M Galbraith, May 25th, 1882

Item

Abstract

I have examined the one you sent me and find it contains about 60% of carbonate of copper 15 ounces of silver per ton. The [hard] other like substances that you ground on a stone is a double oxide of copper and iron.##This is a splendid ore if you have plenty of it. It can be worked right on the spot with a Dynamo machine and steam engine. What is the price of steam coal per ton delivered at Rawlings

Date

1882-05-25

Decade

1880-1889

Type

Identifier

LB012433

Folder Set

LB012

Title

[LB012433], Letter from Thomas Alva Edison to Robert M Galbraith, May 25th, 1882

Microfilm ID

81:732

Publisher

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

Timestamp

May 25, 1882

Item sets