On January 31, 2001, at 1530 mountain standard time, a Cessna 172 (tail wheel conversion), N6830A, sustained substantial damage when it was involved in a ground loop during landing roll at Grand Junction, Colorado. The private pilot and sole occupant was not injured. The flight was a local personal flight operating under Title 14 CFR Part 91 and no flight plan was filed. Visual meteorological conditions prevailed. According to the pilot, she was on landing roll conducting a touch-and-go landing and the aircraft began to swerve. The pilot said she overcorrected and the aircraft did a ground loop causing damage to the airframe at the landing gear attach points. On the Pilot/Operator Report (NTSB Form 6120.1/2), the pilot provided information that she had 11.7 hours total, and 2.4 hours pilot in command in this make and model aircraft.