Oldcastle Materials, a division of CHR, plc, is a national supplier of aggregate materials including crushed stone and asphalt products, ready mixed concrete, recycled products, industrial minerals and sand and gravel. Many Oldcastle companies also have a construction services division who specialize in paving and construction services. This includes everything from excavation and grading to asphalt and concrete paving. Oldcastle Materials has operations at 1,400 locations nationwide.