Caldwell P. Joy

Stewart & Stevenson Services, Inc. is a manufacturer and marketer of specialized equipment and provider of aftermarket parts and service to the oil and gas and other industries. The company's product offerings include equipment for well stimulation, well workover and service, drilling, coiled tubing, cementing, nitrogen pumping, power generation and electrical systems as well as engines, transmissions and material handling equipment. Stewart & Stevenson was founded in 1902 and is headquartered in Houston, TX.