| Business | Phone |
| American Federation-Musicians Po Box 31055, Charleston 29417 | (843) 724-6528 |
| Boilermakers Union 687 2572 Oscar Johnson Dr, Charleston 29405 | (843) 744-3852 |
| International Longshoremen's 1142 Morrison Dr, Charleston 29403 | (843) 720-7360 |
| International Longshoremen's 2113 Courtland Ave, Charleston 29403 | (843) 723-1774 |
| International Longshoremen's 727 King St, Charleston 29403 | (843) 722-1510 |
| National Association-Lttr Crrs 3314 W Montague Ave, Charleston 29418 | (843) 747-8897 |
| Sheet Metal Workers Intl Assn 3345 Seiberling Rd, Charleston 29418 | (843) 554-4418 |
| United Steelworkers Of America 1545 Meeting Street Rd, Charleston 29405 | (843) 723-5328 |