What is union railroad 0-10-2?

The union railroad 0-10-2 is a type of steam locomotive that was used primarily for heavy freight hauling. It featured a wheel arrangement of ten driving wheels, two leading wheels, and no trailing wheels. It was designed to provide increased tractive effort and stability while operating at low speeds. The union railroad 0-10-2 was developed in the early 20th century as a response to the demands of industrialized transportation and was used by railroads across the United States until the mid-20th century. Today, only a few examples of these locomotives exist in museums and historical collections.