| Business | Phone |
| International Alliance-Theatrc 2702 Saratoga Rd, North Charleston 29405 | (843) 744-4434 |
| International Brotherhood 776 3345 Seiberling Rd, North Charleston 29418 | (843) 554-1080 |
| Iron Workers Local 601 7326 Pepperdam Ave, North Charleston 29418 | (843) 552-1554 |
| Meba 4706 Spruill Ave, North Charleston 29405 | (843) 744-5088 |
| Metal Trades Inc 2075 Thompson Ave, North Charleston 29405 | (843) 747-8127 |
| Pace International Union 1069 E Montague Ave, North Charleston 29405 | (843) 225-7223 |
| Palmettos Labor 2605 Elms Plantation Blvd, North Charleston 29406 | (843) 569-7233 |
| Upiu Local 508 1073 E Montague Ave, North Charleston 29405 | (843) 744-5060 |