Classic coal hauler By Angela Cotey | April 3, 2024 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Most offset-side hoppers were built to AAR common designs. This two-bay Minneapolis & St. Louis 2,081-cubic-foot-capacity car, built in 1936, is typical of those in service through the 1960s. Classic Trains collection