Excerpts from the report Summary: The mixed-feeds industry has grown rapidly during recent years. Between 1939 and 1947, the number of feed-mixing plants in the United States almost doubled and the number of employees per plant increased about 18 percent. Its 2 billion dollars' worth of sales in 1947 made the industry one of the Nation's largest. In 1947, the Middle Atlantic region was the largest producer of mixed feeds, measured by the industry's use of leading ingredients. This region had a volume of production 12 times as large as that of the area of smallest production—the Mountain region. About half of the mixed feeds produced in 1947 were poultry feeds. Cattle feeds were next, making up 26 percent of the total. Processed grain and mixed feeds for other farm livestock such as hogs and other animals such as mink and rabbits, made up the remainder. Seven ingredients -- corn, millfeeds and screenings, soybean meal, oats, wheat, alfalfa meal, and barley, in that order – were widely used by the mixed-feeds industry in 1947. These seven account for more than 70 percent of all the ingredients used by the industry in that year.