CONTRIBUTORS TO THIS ISSUE 341 



R. J. Halsey, B.Sc. in Engineering, London University, City and 

 Guilds College, 1926; Diploma of the Imperial College, 1926. Mr. 

 Halsey entered the Engineering Research Branch of the British Post 

 Office in 1927 where he was engaged on line transmission problems in- 

 cluding, from 1938, the design of submerged repeaters and systems. In 

 1947 he became Head of the Line Transmission Division, and in 1952, 

 Assistant Engineer-in-Chief concerned with all submarine cable matters; 

 in this capacity, his primary concern has been the transatlantic sub- 

 marine telephone cable. Associate of the City and Guilds of London 

 Institute and Member of the Institution of Electrical Engineers. 



William W. Heffner, B.S. in Industrial Engineering, Pennsylvania 

 State University 1929; Western Electric Company, Kearny, New 

 Jersey, 1929-1932; Consulting work on industrial engineering in the 

 Management Field 1932-1936; Western Electric Company 1936-. 

 Mr. Heffner 's initial work at Western was concerned with jacks, keys, 

 and mica capacitors. In 1942, he became a Department Chief in charge 

 of manual telephone apparatus. In 1947 he was made an Assistant 

 Superintendent in engineering for manual apparatus. His assignments 

 continued through 1952 in engineering for several manufacturing engi- 

 neering functions, including factory engineering, manufacture of manual 

 apparatus and equipment, metal finishing, material handling, and 

 packing. Between 1952 and 1954 he was Assistant Superintendent in 

 charge of the Relay Assembly Shops at Kearny, New Jersey. In 1954 

 he was placed in charge of operating, production control, plant opera- 

 tions, and maintenance at Hillside, New Jersey, where the flexible 

 repeaters for the transatlantic submarine telephone cable were manu- 

 factured. More recently, he was placed in charge of the Fairlawn, New 

 Jersey, shop of Western Electric, where telephone apparatus and switch- 

 ng equipment are being built. Mr. Heffner is a member of Sigma Tau. 



M. F. Holmes, B.Sc. in Physics 1937; British Post Office 1938-. Mr. 

 Holmes transferred to the Engineering Department in 1942 and since 

 1944 has been concerned primarily with thermionics. He is now engaged 

 in the study of factors leading to changes of tube characteristics. 



John S. Jack, Mountain States Telephone and Telegraph Company 

 1919-1930; American Telephone and Telegraph Company, Long Lines 

 Department, 1930-. IMr. Jack was engaged in various Plant assignments 

 in Colorado and Wyoming between 1919 and 1930. In 1930, he became 

 Division Outside Plant Engineer for Long Lines in Denver; in 1938 he 



