This folder contains correspondence and other documents relating to the business of EOMS, its development of the Dunderland iron deposits, and the use of Edison's cement patents by the Associated Portland Cement Manufacturers, Ltd., a British cement concern. Most of the letters are to or from Edison. Among the other correspondents are Herman E. Dick, a director of the Syndicate, and several EOMS officials, including Francis Hungerford Pollen, managing director; J. Hall, Jr., and Edward H. Beazley, secretaries; and Sir Joseph Lawrence, chairman. There is also some material by Theodore Lehmann, experimenter and mining surveyor.

The documents dealing with the Dunderland ore milling project include an undated plan for the works in Edison's hand, along with other items concerning his decision to favor direct investment over licensing. Also included are analyses of magnetic concentrates, a financial statement, an announcement regarding the increased capitalization of EOMS, and a list of Syndicate shareholders. In addition, there are letters to and from Joseph D. Baucus and Frank L. Roudebush, promoters of Edison's separation process in a gold mining enterprise near Coolgardie, Australia. Related notes, calculations, and drawings in Edison's hand pertain to the costs and capacity of the proposed Australian mill.

More than 95 percent of the documents have been selected.