The ES&NA RR Steam Locomotive #201, Locomotive #201 was built in 1906 by the American Locomotive Company of Patterson, New Jersey, specifically for the construction of the Panama Canal. It operates on up to 185 pounds of steam pressure (p.s.i.), which produces 21,000 pounds of tractive effort. The Tender will hold 1,300 gallons of oil and 2,500 gallons of water. This Engine was a coal burner when new, but was converted to use of oil during World War 1 when it was feared that coal would become scarce. Locomotive #201 is also a 2-6-0 (Mogul) and weighs 125,000 pounds (engine only) - added a fully loaded tender and the weight rises to the neighborhood of 200,000 pounds. This engine was originally built to run on five foot wide French-laid rails in Panama. Locomotive #201 was converted to standard gauge (4' 8 1/2) when it was returned to the United States. One hundred of these engines were built by the American Locomotive Company in 1906. There is only three in existence today. Retired in the early 21st century because of an expensive boiler re-build mandated by the state boiler inspector.