Ray Griffin, operations manager for A R Readymix, Dixon, Calif., recently added greater cement storage and weigh-batching capacity to keep up with increasing demand. At Unicon Concrete LLC's plant in Durham, N.C., Andy Stankwytch has taken on the task of erecting a new plant equipped with a high-speed mixer without disrupting the old transit-mix plant's daily production. Adjacent to Boston Sand and Gravel's concrete production complex, Central Artery tunnel constructors are creating another passage for suburbanites to get to work. To meet increased production requirements, plant engineers developed an innovative way to practically double the capacity of a dry-mix batch plant. These relatively innocuous sounds have reverberated loudly in producer's business offices across the continent. Producers are finding that strong markets can come and go quickly, so success depends on great locations and existing operating permits. Rebuilding existing plant structures is rapidly becoming the preferred choice of producers who need to increase both capacity and efficiency. In many cases plant renovations are just a normal part of doing business. "By replacing parts and components that have worn out, the producer can increase plant production rates with larger batchers, increase raw-material storage capacities and increase flexibility without changing the original structure's foundation," says Jon Jureski, a sales engineer for CMI Johnson/Ross. Keywords: Besser Appco, BMH Systems, Continental Equipment, CMI Johnson/Ross, Erie Strayer, Vince Hagan, Helco, Merts, Odisa Forsa, Rexcon, Simem North America, A R Readymix, Unicon, Boston Sand and Gravel, rebuild, plant, renovation, batching, technology, redesign, permitting, upgrade, addition, legend, Statler Ready Mix, retrofit