Front side of the Pennsylvania Power and Light Company Fireless D No. 4094 at the Railroad Museum of Pennsylvania, east of Strasburg, PA. This is a fireless 0-8-0 locomotive. The car is listed on the roster as RR72.20.1A. It is the largest fireless locomotive ever built. It was built for the Hammermill Paper Company, but it turned out to be too heavy for their tracks.