After the successful development of DRUM, a number of other revolutionary union movements began developing at other plants throughout 1968 and early 1969, including the Ford Revolutionary Union Movement (FRUM) and Eldon Avenue Revolutionary Union Movement (ELRUM), both of which carried out increasingly militant and successful actions against the bosses in their factories and the UAW leadership. The spread of RUMs was not only limited to the auto industry, with developments among the United Parcel Service workers (UPRUM), health workers (HRUM), and among Detroit News workers (NEWRUM).