| Business | Phone |
| South Flint Gravel Inc 6090 Belford Rd, Holly 48442 | (248) 634-3231 |
| Tri-City Aggregates Inc 14300 Shields Rd, Holly 48442 | (248) 634-8276 |
| Middleton Gravel Co 12166 Dixie Hwy, Holly 48442 | (810) 694-6353 |
| Midway Sand & Gravel 7229 Perryville Rd, Holly 48442 | (248) 328-0769 |