| Business | Phone |
| Rmc Cemex 333 23rd Ave, Oakland 94606 | (510) 533-5054 |
| Sierra Concrete 9819 Pearmain St, Oakland 94603 | (510) 562-1343 |
| Sierra Pacific 3211 Wood St, Oakland 94608 | (510) 547-8897 |
| Specialty Crushing Inc 7817 Oakport St, Oakland 94621 | (510) 986-0964 |