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These records cover the period 1900-1908. They consist of letterbooks, experimental notebooks, and other bound items relating primarily to the design and construction of the iron concentration plant in the Dunderland region of Norway. The two letterbooks contain outgoing correspondence by Edison and Herman E. Dick pertaining to the Dunderland project, storage batteries, and cement. Included are instructions from Edison to draftsman William Simpkin regarding the plant and machinery at Dunderland, as well as some comments concerning briquettes. A volume labeled "Experiments" was used primarily by an unidentified author for notes, drawings, calculations, and reports relating to experiments with ores. It also contains one page of notes and calculations by Edison pertaining to a sight-feed experiment. Another volume, used primarily by Simpkin, consists of cost estimates for construction and equipment at the Dunderland works. A third volume, used primarily by Edison, contains notes and drawings concerning the construction of the Dunderland works and operations at Edison's cement works in Stewartsville, New Jersey.
