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[E1557-F] (E-15-57) Mining

Title: [E1557-F] (E-15-57) Mining
Description: This folder contains correspondence and other documents relating to the technical and commercial development of Edison's technologies for ore concentration. The selected documents pertain primarily to Edison's collaboration with Henry B. Clifford, a mine and mill operator who employed longtime Edison associate James B. Ballantine as his engineer and experimenter. Included is a communication from Edison's personal secretary, Harry F. Miller, informing the inventor of Clifford's death. Also included are letters from stockholders in the defunct New Jersey & Pennsylvania Concentrating Works inquiring about the value of their shares.
Approximately 40 percent of the documents have been selected. The unselected documents consist primarily of letters of transmittal and unsolicited inquiries that received no substantive reply from Edison.
URL: https://edisondigital.rutgers.edu/folder/E1557-F
Identifier: E1557-F
Type: Edison General File
Rights: Courtesy of Thomas Edison National Historical Park.
Is Part Of: Edison General File Series -- 1915
Alternative Title: (E-15-57) Mining -- Ore Milling
Has Version: Archive.org Viewer, Microfilm Series Reel 263

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