| Company | City | State / Province | Country | Phone | Website |
|---|---|---|---|---|---|
| Quikrete/SPEC MIX | West Bend | WI | US | (404) 634-9100 | |
| R. Ducharme, Inc. | Chicopee | MA | US | (413) 534-4516 | cmsblock.com |
| R.I. Lampus Company | Springdale | PA | US | (412) 362-3800 | lampus.com |
| R.I. Lampus Company | Wampum | PA | US | (412) 362-3800 | |
| R.I. Lampus Company | Cambridge Springs | PA | US | (412) 362-3800 | |
| R.I. Lampus Company | Cambridge Springs | PA | US | (814) 398-4607 | |
| R.I. Lampus Company | Aliquippa | PA | US | (724) 375-6637 | |
| Rainbow Concrete Industries Ltd. | Sudbury | ON | CA | (705) 566-1740 | rcil.ca |
| Raineri Building Materials | Eureka | MO | US | (314) 574-9954 | raineri-materials.com |
| Raineri Building Materials | Belleville | IL | US | (618) 233-4427 | buildingproductscorp.com |
Concrete Masonry and Hardscapes Association