Stewardson Furnace built in 1851 by Stewardson and Laughlin. Intended to use coke it had little success at first, but later it was quite successful. Its measurements were 11 foot bosh and 43 feet high. Capacity was 75 to 80 tons a week until it went out of blast sometime after 1880. Farther up the hill from the furnace are the remains of coke ovens used to produce the coke for the furnace. To reach this site drive north from Templeton on LR 03068 to Mahoning, turn east on T-691, which goes right just before reaching the bridge over Mahoning Creek; proceed on this road to where it makes a 270 degree bend while going uphill. The ruins are to the right in the bend. From A GUIDE TO THE OLD STONE BLAST FURNACES IN WESTERN PENNSYLVANIA by Myron B. Sharp and William H. Thomas, published by the Historical Society of Western Pennsylvania, Pittsburgh, PA. 1966. Mimi Reed, State College, PA