| Business | Phone |
| C L Pharris Sand & Gravel 8731 Orange St, San Bernardino 92408 | (909) 888-7282 |
| Chaparral Concrete Co 2400 W Highland Ave, San Bernardino 92407 | (909) 873-2772 |
| Fourth Street Rock 1955 W 9th St, San Bernardino 92411 | (909) 885-6866 |
| Fine Ready Mix 1774 W 20th St, San Bernardino 92411 | (909) 644-7995 |