Mongoose, for a fairly detailed description of the lift system used on
Scorpion, (also many other Schwarzkopf portable coasters), which really is a chain lift, go to
http://www.uspto.gov and go to the PATENTS section, and look up United States Patent #4,270,459, "Chain-type Ascent System for Roller Coaster."
The cable lift system on
Millennium Force is a unique design, sufficiently different from earlier cable-lift designs that while Cedar Point's "FIRST!!" claim is a little pointless, it is at least plausible.
--Dave Althoff, Jr.