Focusing on efforts to devise recruitment and teaching methods relevant to British industrial workers, an account is given of the day release time courses provided by the Sheffield University Extramural Department in association with trade unions and management among miners, steelworkers, and technologists in South Derbyshire, South Yorkshire, and the Scunthorpe area of Lincolnshire. Origins (1952-68) and organization, principles and methods of operation (including staffing, costs, course length, and student activities), and differing patterns of group cohesion are considered, along with student motives for participating. Finally, several criteria are examined for judging the effectiveness of these courses. Seven tables are included. (ly)