Twenty-three people were injured late Friday evening when a swing ride at the Jumping Frog Jubilee at the Calaveras fair grounds collapsed at nearly full speed. Witnesses on the scene said the giant Yo-yo swing ride was at full capacity when it malfunctioned at nearly full speed and collapsed, sending riders tumbling some 25 feet to the ground. At least 2 air ambulances as well as several ground ambulances were requested to land at the Frog Town location.  “We think the main motor shaft just collapsed in the middle of the ride,” said one fair vendor. “We were afraid the ride would collapse on top of people. Folks were screaming, it was complete chaos.”

According to a Stockton news source, the Yo-Yo ride at the fairgrounds near New Melones Lake and Columbia State Parkchain that swing outward as the ride picks up speed. The arms rise and fall as they spin around a center pole, putting the seats horizontal to the ground. A Calaveras County sheriff's spokesman said three people were severely injured and another 20 fairgoers suffered lesser injuries. Most of the riders were children, and all suffered some form of injury. The three most seriously injured riders, a woman and two girls, were airlifted to three different hospitals. The fair's carnival area was immediately closed, though other fair attractions remained open. The carnival section was expected to remain closed until at least Saturday. Calaveras sheriff's investigators along with Cal-OSHA inspectors were expected to look over the ride for a possible cause of the collapse. The ride was operated at the fair by the company Midway of Fun, based in Oroville. has metal arms, each with a seat at the end attached by a