Turbine. Here is a duplicate 35mm color slide by an unidentified photographer that was taken at the Chicago World's Fair in July of 1948. Shown here is Pennsylvania Railroad engine #6200, the S-2 (6-8-6) "Steam Turbine" built by the Baldwin Locomotive Works during September of 1944, rated at 6,900 horsepower, and retired in January of 1952 after barely eight years of experimental service. Woosh! |