In 1943, unionism came to Sudbury, Ontario in the form of the International Union of Mine, Mill and Smelter Workers, also known as Mine Mill. In an organizing drive which set a record, the Mine Mill union signed up a majority of workers within three months. By the time of this program's broadcast 20 years later, workers' wages had trebled, working conditions were bettered, and pension and medical plans improved, but still the union was fighting for its life. It had become subject to a raid of its worker by the United Steel Workers of America, who were part of a chorus of voices claiming the Mine Mill union was under communist influence. This program examines the dramatic war between unions in Sudbury.