Millennium Force third-longest roller coaster in North America following The Beast at Kings Island and Fury 325 at Carowinds. It features a cable lift hill with a drop, two tunnels, three overbanked turns, and four hills. The coaster also has a top speed of . Since its debut, Millennium Force has been voted the number one steel roller coaster ten times in "Amusement Today"'s annual Golden Ticket Awards, and its lowest ranking in the poll has only been two. Although Millennium Force has been surpassed in height and speed, it remains one of the tallest and fastest in the world. The planning,
MKM steel MKM steel MKM steel, an alloy containing nickel and aluminum, was developed in 1931 by the Japanese metallurgist Tokuhichi Mishima. While conducting research into the properties of nickel, Mishima discovered that a strongly magnetic steel could be created by adding aluminum to non-magnetic nickel steel. The developers claim MKM steel is tough and durable, inexpensive to produce, maintains strong magnetism when miniaturized and can produce a stable magnetic force in spite of temperature changes or vibration. MKM steel is similar to Alnico. MKM is an acronym for Mitsujima ka magnetic, 'Mitsujima ka' being the name of the inventor's childhood home.