b'R\x00\x00\x00 H\x00\x00\x00\x00\x00\x00 \x00\x00 \x00\x00\x00 A\x00\x00\x00\x00\x00 B\x00\x00\x00\x00With the expansion of the electronic industry and its demand for magne\x00c materials, Robert M. Arnold, in 1940, moved the opera\x00on back to Marengo to be nearer the Chicago market.During the early part of World War II, The Arnold Engineering Company manufactured parts for the Sherman and M-3 tanks. As the war progressed, Alnico magnets were also produced for one of the largest O.S.S. government contracts of its kind in the war. Proximity fuse magnet assemblies were manufactured for motor and an\x00-aircra\x00 shells, in appropriate top clearance.In 1946, Allegheny Ludlum Steel Corpora\x00on purchased all the stock of The Arnold Engineering Company. At that \x00me, The Arnold Engineering Company became a wholly owned subsidiary opera\x00on. Robert M. Arnold con\x00nued as President of the company and in addi\x00on, became a Vice President and Director of Allegheny Ludlum.Un\x00l 1948, the principal product was Cast Alnico permanent magnets. They ranged in size from large cas\x00ng assemblies weighing over two tons to very small components weighing less than one gram, and are used in motors, magne\x00c ore separators, medical and home appliances, and in many electronic devices such as microphone components in N.A.S.A. communica\x00on equipment. In 1948, a new product line was introduced. This line was called Mo-Permalloy powder cores and was originally manufactured under license agreement with the Western Electric Company. They are used primarily in electronic loading devices, electrical lters, and telephone equipment. Early Powder Core Products ManufacturingP\x00\x00\x00 4'