|Headquarters||West Chester, Ohio, USA|
|In business||1991 to July 2002|
As Charlie Dinn's Dinn Corporation closed in 1991, his daughter Denise Dinn formed a new company. Dinn hired several former employees of Curtis D. Summers, Inc. (who designed all of Dinn Corporation's roller coasters), including Larry Bill, Chad Miller, Korey Kiepert, and Michael Graham.
The company was closed in July 2002 after filing for bankruptcy the previous month. Personal matters were cited as a reason for closure, as company president Denise Dinn was in the process of a divorce. At the time it was in the process of constructing the New Mexico Rattler, which was subsequently finished in-house. Denise Dinn was hired by S&S Power, who opened a wooden roller coaster division. Four wooden roller coasters were built under the S&S name. Bill, Miller, Kiepert and Graham went on to form The Gravity Group, which remains in business today.
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