Roller coaster History: how it started - 3 views
http://www.ultimaterollercoaster.com/coasters/history/start/america.shtml
http://www.ultimaterollercoaster.com/coasters/history/start/america.shtml
http://www.ultimaterollercoaster.com/coasters/history/start/
http://ffden-2.phys.uaf.edu/211_fall2002.web.dir/shawna_sastamoinen/roller_coasters.htm
salary of roller coaster designers.
Sixty-three-year-old former cartwright Anton Schwarzkopf holds nearly 60 patents in the field of roller coaster design and manufacturing, and has produced more than 55 roller coaster systems around...