The Harris Ranch cattle feed lot, the Harris Feeding Company, in Coalinga, California. California's largest feed lot with up to 100,000 head of cattle. A cowboy on horseback uses an electric cattle prod to load them into tractor-trailers to transport them to the company's slaughterhouse in nearby Selma, California. Coalinga, California. San Joaquin Valley. USA [[From the company: THE HARRIS FARMS GROUP OF COMPANIES. Harris Farms, Inc. is one of the nation's largest, vertically integrated family owned agribusinesses]].