Tabulations and charts studying the relation between production and two factors: repair time and personal time. The report includes complete logs of personal time taken by the five operators in the relay assembly test room
Two documents, both of which concern illumination studies, are presented. The first is a report on the illumination study at Hawthorne, which began Nov. 24, 1924 and ended April 30, 1927. In this study, candles of various lengths were introduced...