Werner Stengel including Son of Beast, Millennium Force, Superman The Ride, Top Thrill Dragster, Kingda Ka, Dollywood's Mystery Mine, El Toro, Maverick and many others. In the 2004 Amusement Today Golden Ticket Awards list of the world's top 50 steel roller coasters, 72% have had direct involvement with Stengel Engineering. He received an honorary doctorate from Gothenburg University in 2005, for his "inexhaustible creativity in linking physics and design to the experience of the body in roller coasters and other rides." One of the most famous and highly regarded Stengel/Schwarzkopf rides is Lisebergbanan at Liseberg, a park situated in Gothenburg city, Sweden.
Ka-Bar The "1095 Cro-Van" steel used in the blades of contemporary Ka-Bars has a hardness of 56–58 HRC, while the guard and pommel are made from sintered 1095 carbon steel. Besides use as a fighting knife, the Ka-Bar has proved useful as a utility knife, for opening cans, digging trenches, and cutting wood, roots, wire, and cable. In 1995, the design was updated with a stainless steel blade, synthetic handle, and synthetic sheath marketed as "The Next Generation". As of June 2012 the "Next Generation" models have been discontinued. In 1999, Ka-Bar released the "D2 Extreme" version of their fighting knife,