This folder contains correspondence and other documents relating to the Dunderland ore milling project. Among the correspondents are Edison; Herman E. Dick, Edison's representative and a director of the Dunderland Iron Ore Co., Ltd.; J. Hall, Jr., secretary of EOMS; and William Simpkin, the draftsman responsible for executing Edison's designs. There are also letters by Theodore Lehmann, the company's resident engineer, and Herschel Roberts, a civil engineer.

Included are documents pertaining to the costs and results of Edison's briquetting experiments, along with a 12-page memorandum by Edison proposing alterations in the design of the crushing rolls. There is also correspondence regarding a visit to Edison's cement works at Stewartsville, New Jersey, by EOMS directors Francis Hungerford Pollen and William Rhodes, as well as a consulting engineer's report on the progress of the work of the Standard Construction Corp., Ltd. Two items concern reports of an eye injury sustained by Edison during x-ray experiments.

Approximately 60 percent of the documents have been selected. Among the unselected items is a mine engineering report by E. Ackerman.