| Name | Address, Zip |
| Local 136 Ibew & Gulf Coast Chapter Neca Local Labor-management Coop | 2058 Dauphin St, 36606-1929 |
| Ibew Local 345 | 2343 Capital Ct, 36695-3605 |
| International Union Of Operating Engineers Local No 653 | 801 Spring Hill Ave, 36602-1311 |
| Ironworkers Local 798 Apprenticeship And Training Fund | 801 Saint Francis St, 36602-1225 |
| International Union United Auto Aerospace & Agricultural Workers | Po Box 50353, 36605-0353 |
| National Air Traffic Controllers Association | 2590 Airbus Way, 36615 |
| National Air Traffic Controller Association | 101 Flave Pierce Rd, 36608-9437 |
| International Association Of Sheet Metal Air Rail & Transportation | Po Box 6708, 36660-0708 |
| International Alliance Theatrical Stage Employees & Moving Picture | Po Box 2492, 36652-2492 |
| National Alliance Of Postal And Federal Employees | 908 Rowell St, 36606-2123 |
| International Union Of Bricklayers And Allied Craftworkers | 1108 Spring Hill Ave, 36604-2716 |
| International Association Of Heat & Frost Insulators & Allied Workers | 908 Butler Dr, 36693-5106 |
| International Union Of Painters And Allied Trades | Po Box 1396, 36633-1396 |
| Amalgamated Transit Union | 111 East I65 Service Road, 36606 |
| American Federation Of Labor & Congress Of Industrial Orgs | 1640 Dauphin Island Parkway, 36605-3002 |
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| American Postal Workers Union | Po Box 814, 36601-0814 |
| American Federation Of Teachers | 601 Bel Air Blvd Ste 213, 36606-3534 |
| American Federation Of Labor & Congress Of Industrial Orgs | 801 Spring Hill Ave, 36602-1311 |
| American Postal Workers Union | Po Box 814, 36601-0814 |
| American Federation Of Labor & Congress Of Industrial Orgs | 908 Butler Dr, 36693-5106 |
| United Food And Commercial Workers International Union | 6266 Cottage Crest Ln, 36609-2746 |
| Coastal Operating Engineers Joint Apprenticeship And Training Fund | 801 Saint Francis St, 36602-1225 |
| United Association Of Journeymen & Apprentices Of The Plumbing & Pipe | 2458 Old Shell Rd, 36607-3020 |
| United Association Of Journeymen & Apprentices Of The Plumbing & Pipe | 1717 Old Shell Rd, 36604-1323 |
| International Association Of Fire Fighters | 2170 Spring Grv W, 36695-7708 |
| International Association Of Fire Fighters | 4805 Halls Mill Rd, 36693-5633 |
| International Longshoremens Association | Po Box 532, 36601-0532 |
| International Longshoremens Association | 505 Dr Martin Luther King Jr Ave, 36603 |
| National Association Of Letter Carriers | Po Box 1692, 36633-1692 |
| International Longshoremens Association | Po Box 813, 36601-0813 |
| International Longshoremens Association | Po Box 760, 36601-0760 |
| International Brotherhood Of Electrical Workers | 2244 Halls Mill Road, 36606 |
| International Brotherhood Of Teamsters | 112 S Broad St, 36602-1109 |
| Brotherhood Of Maintenance Of Way Employees | 2012 Forest Oaks Dr W, 36618-2466 |
| International Brotherhood Of Electrical Workers | Po Box 11381, 36671-0381 |
| Mobile Electrical Jatc Trust Fund | 2244 Halls Mill Rd, 36606-4604 |
| National Treasury Employees Union | 1110 Montlimar Dr Ste 1075, 36609-1748 |
| International Longshoremens | Po Box 2001, 36652-2001 |
| United Steelworkers | 4842 Dellwood St, 36619-1166 |
| United Steelworkers | 917 Western America Cir Ste 207, 36609-4114 |
| United Steelworkers | Po Box 81527, 36689-1527 |
| United Steelworkers | 1242 Sudan St, 36693-4400 |
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