Valley Furnace. First furnace to use only anthracite for fuel, 1836. Built by Dr. F.W. Geissenhainer, who patented the method in 1833. Process in use continuously by the Pottsville or Pioneer Furnace, 1839 and after. N Valley St. (US 209) near Pine St., New Philadelphia, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap
