Coal industry labor org., 3 letters
Grp. that gets the shaft?, 3 letters
John L. Lewis' grp., 3 letters
John L. Lewis's org., 3 letters
One of the CIO's first members, 3 letters
Org. concerned with shafts, 3 letters
Org. for underground workers, 3 letters
Org. headed by John L. Lewis in 1920, 3 letters