| Central Pre-Mix Development Corporation Holding company whose subsidiary operating companies supply concrete and asphalt to the Northwest. http://www.centralpremix.com/ |
| Conmix Manufactures ready-mixed concrete and pre-mixed plasters and mortars in the Middle East and Asia. http://www.conmix.com/ |
| Dragon Cement and Concrete Manufacturers of ready-mix concrete and cement with locations in New England. http://www.dragonproducts.com/ |
| Irving Materials, Inc. (IMI) Concrete and aggregate supplier. Headquarters are in Louisville, with offices throughout Indiana, Ohio, Kentucky and Tennessee. http://www.irvmat.com/ |
| Ozinga Bros., Inc. Selling and delivering ready mix concrete. http://www.ozinga.com/ |
| Penny's Concrete Providing ready-mix concrete as well as sand and rock products for residential, commercial, and industrial projects. http://www.pennysconcrete.com/ |
| Thomas Concrete Producers of ready mix serving Georgia and the Carolinas. http://www.thomasconcrete.com/ |
| Twin City Concrete Products Supplies packaged concrete, sand, and mortar products for the upper Midwest. http://www.twincityconcrete.com/ |