[D9231-F]

https://edisondigital.rutgers.edu/folder/D9231-F

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Part Of: Document File Series -- 1892

[D9231-F] (D-92-31) Mining -- General

This folder contains correspondence and other documents relating to mining and ore milling. Included are many requests for information about Edison's ore separation process. A few letters from Walter S. Mallory deal with the business of the Edison Iron Concentrating Co. There is also correspondence from John Birkinbine, a consulting engineer hired by Edison, concerning Edison's various mining properties, as well as requests from mine managers and owners for interviews with Edison. Two printed extracts from Transactions of the American Institute of Mining Engineers, pertaining to the treatment of magnetic iron ores, are also included.

Approximately 70 percent of the documents have been selected. The following categories of documents have not been selected: routine business correspondence regarding non-Edison ore separation patents; routine letters pertaining to meetings and interviews.

Courtesy of Thomas Edison National Historical Park.

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