| Business | Phone |
| Blue Mountain Stone 4168 Ute Hwy, Longmont 80503 | (303) 823-6160 |
| Brannan Sand & Gravel 7504 Saint Vrain Rd, Longmont 80503 | (303) 485-6552 |
| Idaho Creek Gravel Co Inc 3279 County Road 20 1/2, Longmont 80504 | (303) 678-8531 |
| Idaho Creek Gravel Co Inc 7909 County Road 5, Longmont 80504 | (303) 530-1539 |
| Lafarge 2002 County Road 20 1/2, Longmont 80504 | (720) 494-7955 |
| Owens Brothers Concrete Co 12248 Weld County Road 15, Longmont 80504 | (303) 684-9783 |