Astec Industries, Inc. designs, engineers, manufactures and markets equipment and components used primarily in road building and related construction activities. The Company's products are used in each phase of road building, from quarrying and crushing the aggregate to application of the road surface. The Company also manufactures certain equipment and components unrelated to road construction, including equipment for the mining, quarrying, construction and demolition industries; gas and oil drilling rigs; water well and geothermal drilling rigs; industrial heat transfer equipment; whole-tree pulpwood chippers; horizontal grinders; and blower trucks. The Company also manufactures a line of multiple use plants for cement treated base, roller compacted concrete and ready-mix concrete. The Company�s business segments are Asphalt Group, Aggregate and Mining Group, Mobile Asphalt Paving Group and Underground Group.