Production. Aircraft engines. She used to be a librarian, now she inspects aircraft parts. Prior to Alma Jean Vincent's employment in a large Midwestern aircraft plant, she managed the junior book section of a suburban library. She had also been an assistant buyer of sportswear, but this lack of industrial experience seems to have been no handicap for her present job of visual gauge operator, inspecting airplane motor parts. With only six months of war work behind her, she's more than meeting plant requirements for speed and precision. Melrose Park, Buick plant