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Names
- Tunnel and Subway Constructors International Union1
- United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry1
- United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry, Local 1051
- United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry, Local 2531
- United Steelworkers of America (USWA) AFL-CIO-CLC1