UNION LINKS
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- International Association of Machinists and Aerospace Workers
- International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers & Helpers, AFL-CIO
- Sheet Metal Workers’ International Association
- Brotherhood of Maintenance of Way Employes Division
- National Conference of Firemen & Oilers
- Transportation Communications International Union
- International Brotherhood of Electrical Workers
- Brotherhood of Railway Signalmen
- Brotherhood of Locomotive Engineers and Trainmen
- United Transportation Union