Roberts Torpedo. First successful device for increasing the flow of oil by setting off an explosion deep in a well. It was publicly demonstrated in 1865. The nitroglycerin was made .4 mile south of here, along Hammond Run. Smock Blvd. (PA 8), near Dutch Hill Rd., Titusville, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap
