Creosote that creosote contained a mixture of creosol and guaiacol. Later investigations by Gorup-Besanez, A.E. Hoffmann, and Siegfried Marasse showed that wood-tar creosote also contained phenols, giving it a feature in common with coal-tar creosote. Historically, coal-tar creosote has been distinguished from what was thought of as creosote proper—the original substance of Reichenbach's discovery—and it has been referred to specifically as "creosote oil". But, because creosote from coal-tar and wood-tar are obtained from a similar process and have some common uses, they have also been placed in the same class of substances, with the terms "creosote" or "creosote oil" referring to
East Broad Top Railroad and Coal Company of the oldest railroad roundhouses in the US still in operation, was built in 1882. A coal cleaning plant and a full maintenance shops complex were also built, bridges were upgraded from iron and wood to steel and concrete, wood rolling stock was replaced by steel, and modern high-powered steam locomotives were bought from the Baldwin Locomotive Works of Philadelphia. In the 1950s, coal demand plummeted as homes and industries switched to cheap oil and gas. The last nail in the coffin came when the silica brick plants in Mount Union converted to oil and gas and not enough coal