This folder contains documents, primarily correspondence, dealing mainly with mining and milling operations at Ogden, New Jersey. The principal correspondents are Edison; Harry M. Livor, general manager until June 1891; P. F. Gildea, superintendent at the Bechtelsville, Pennsylvania plant and employed at other properties until June 1891; and William S. Perry, treasurer of the company. Some of the letters deal with the problem of ore in the tailings. Other items concern personnel changes and the company's relations with its major ore purchasers, including the Bethlehem Iron Co. and Pennsylvania Steel Co. Approximately 50 percent of the documents have been selected.