Org. concerned with shafts
Else clues• Coal digger's org.
• Coal industry labor org.
• Coal industry org.
• Coal miners org.
• Diggers' org.
• Grp. that gets the shaft?
• Industrial org.
• John L. Lewis' grp.
• John L. Lewis's org.
• One of the CIO's first members
• Ore digger's org.
• Org. for underground workers
• Org. headed by John L. Lewis in 1920
• Org. once headed by John L. Lewis
• Underground grp.