| 05-CB-08958-001 | International Brotherhood of Boilermarkers, Iron Ship Builders, Blacksmiths, Forgers and Helpers, Local S-50, AFL-CIO (Vulcan-Hart Company) | Union Security Related (including Beck) |
| 05-CB-09104-001 | International Brotherhood of Boilermakers, Local 684, AFL-CIO (Norfolk Shipbuilding and Drydock Co., d/b/a Norshipco) | Union Security Related (including Beck) |
| 07-CB-13908-001 | United Cement,Lime,Gypsum and Allied Workers Division,International Brotherhood of Boilermakes, AFL-CIO-CFL (Besser Company) | Union Security Related (including Beck) |
| 08-CB-09957-001 | Local Lodge # 85 of the International Brotherhood of Boilermakers, Iron Shipbuilders, Blacksmiths, Forgers and Helpers (The Shipyard Division of Toledo Shiprepair Company) | Union Security Related (including Beck) |
| 14-CB-09287-001 | Boilermakers & Helpers Local No. 27 (Kickham Boiler) | Union Security Related (including Beck) |
| 14-CB-09525-001 | International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers & Helpers (Peerless Appliance) | Union Security Related (including Beck) |
| 17-CB-04129-001 | Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers, AFL-CIO (Carlon) | Union Security Related (including Beck) |
| 17-CB-04129-002 | Local D465 Boilermakers, Iron Ship Builders, Blacksmiths, Forgers & Helpers, AFL-CIO (Carlon) | Union Security Related (including Beck) |
| 17-CB-05399-001 | Cement, Lime and Gypsum and Allied Workers, Lodge D-465, a Division of International Brotherhood of Boilermakers, AFL-CIO (Lamson and Sessions) | Union Security Related (including Beck) |
| 27-CB-04144-001 | Professional EMTs & Paramedics (American Medical Response) | Union Security Related (including Beck) |
| 28-CB-06804-001 | The International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers, and Helpers, AFL-CIO,?Local Lodge D 361 (Chemical Lime Company) | Union Security Related (including Beck) |
| 30-CB-05050-001 | Brotherhood of Boilermakers Local 443 (Manitowoc Crane) | Union Security Related (including Beck) |
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