Stewart & Stevenson

Sheridan White Rock Co. is a provider of white quartz aggregate, landscaping and architectural materials, pea gravel and sand for all applications. Based in Sheridan, Ark., the company offers 20 varieties of small aggregates, ranging in color from white to black. In addition to offering specialty materials, it provides bulk materials, including white sand for swimming beaches, golf courses and masonry work. Sheridan White Rock Co. also offers roofing aggregates and materials for exposed aggregate precast work and landscaping ground cover.

Based in N. Little Rock, Ariz., ISKCO manufactures a complete line of vibration equipment. The company offers design and production for original equipment manufacturers (OEM)/private label customers. It utilizes computer numerical control (CNC) machining, as well as 3-D computer-aided design/FEA design. Some of the different types of vibrators offered by ISKCO include external, internal, electric, portable, precast equipment and power supplies. The company's HANDY-VIB, a light-weight vibrator is constructed with a durable aluminum die-cast motor case.