R+L Carriers, 606 N Williams St, Amarillo, TX 79107, US

Harold C. Groendyke established Groendyke Transport in 1932. The company operates as an ISO 9002 compliant tank truck carrier. Its customers include manufactures of chemical, petroleum and grain products. Groendyke has nearly 40 terminal locations in more than 15 states throughout the United States that include Louisiana, New Mexico, Oklahoma, Texas, Pennsylvania, Wyoming, Arkansas, Colorado, Georgia, Illinois and Kansas. The company provides tank transport services, flatbed services and private fleet transition, as well as onsite coordinators and inventory control services. It features more than 900 tractors, as well as 1,700 trailers. Groendyke Transport is headquartered in Enid, Okla., with a location in Borger, Texas.