To celebrate its 100 year anniversary, SECO/WARWICK Corp., Meadville, PA, has published the pocket-sized Centennial (8th) edition of their Heat Treating Data Book, complete with updated tables and a new format. New information and curves have been added for gas-quenching technology. First published in 1942, the handbook provides basic heat treating information and equipment descriptions for use by students and apprentices in school laboratories and small shops.