Muth Welding Service, 21233 US Highway 50, Rocky Ford, CO 81067, US

Established in 1945, W.H.O. Manufacturing Co. specializes in the manufacture of industrial and farm equipment. Based in Lamar, Colo., the company invented the tub grinder and received the original tub grinder patent in 1952. W.H.O. Manufacturing Co. s stationary grinders find application in large commercial or industrial mill operations. It provides three types of equipment, including wood, industrial and agricultural grinders. The company also supplies and ships grinder parts to customers. Its wood grinders process and break up to 120 cubic yards of wood waste per hour.