Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 392
is found as an important constituent in mostclays, but the known methods of extraction do not yet permit theuse of such materials as an aluminum ore. Bauxite, which containsa high per cent of aluminum as hydrated oxide, is used almostexclusively in this industry, but to adapt it to the electric… … Fig. 20. Aluminum FurnaceCopied from The Electric Furnace, by Alfred Stansfield The history of the aluminum process is interesting in that it recordsthe almost simultaneous discovery of similar processes in America andin Europe. To Mr. Chai^les M. Hall is accorded the honor of workingout the method…
Electrical engineering
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