Hutchison-Western, 7460 US Highway 85, Commerce City, CO 80022, US

Founded in 1933, Darlington International is the nation's second-largest independent renderer. Annually, it collects more than 1 billion pounds of animal by-products from livestock producers, meat packers, grocery stores and restaurants. Darlington International is one of the major processors of animal and poultry by-products generated by the livestock, poultry and retail meat industries, as well as used cooking oils from restaurants and snack food manufacturers. Finished products such as fats, proteins and hides are distributed to manufacturers worldwide. Darlington International is a leading U.S. exporter of meat and bone meal. The company operates a fleet of 450 trucks and it has approximately 950 employees. The company sells its products nationally and internationally to manufacturers of chemicals, soap, cosmetics, plastics, lubricants, livestock and poultry feeds, pet foods and leather goods.