The main ones, just offhand, are the Mine, Mill and Smelter Workers and the remnants of the IWW. There were some radical unions in the CIO, including those, like the UE, led by CPers. Let me get back to you with more. Got to go to beddy-bye.
Hey Red Dave, I was wondering if you had any information on the radical unions in the U.S. in the 1920s and 1930s, I've heard a bit here and there but from what it seems it was pretty awesome. Maybe some articles on Marxists.org or somewhere else would be awesome if you have time.
