
Have you ever wanted to know what exactly a G-force is or what the
difference is between an inverted and suspended roller coaster?
What is an immelman and what does ERT stand for? The answers to these
questions and many, many more are available in the TPO Reference Library.

Records have been broken and innovations have changed the industry. Below
are just a few of the events that have taken place on this date in amusement
history. Check back often, because the almanac is updated daily.
1991 - Mean Streak, a wooden coaster from Curtis Summers, opens at Cedar Point in Sandusky, Ohio.
1991 - Sidewinder, a steel boomerang coaster from Vekoma, opens at Hersheypark in Hershey, Pennsylvania.
1992 - Curtis D. Summers, coaster designer famous for wooden roller coasters including Timber Wolf and Texas Giant, dies.
1996 - Wild Thing, a steel hypercoaster from Morgan Manufacturing, opens at Valleyfair! near Minneapolis.
1996 - Bolliger & Mabillard works with Cedar Point in Sandusky, Ohio to introduce Mantis, which was, at the time, the world's tallest, fastest and steepest stand-up coaster.
1999 - Martin's Fantasy Island in New York introduces the Silver Comet, a wooden coaster from CCI.