Synopsis

The little engine puffed and strained, a persistent cough in the railway yard. It seemed unable to keep pace with its fellows. The Fat Controller, observing the struggling engine, recognized the problem. A smaller firebox meant less power. He ordered a special shipment of Welsh coal, known for its potency. The result was remarkable. The Green Engine, invigorated by the new fuel, worked with renewed vigor. It chugged and steamed, a happy whistle escaping its chimney. The improvement was u