At least six people are known to have died as a result of mishaps on rides at the park. It was given nicknames such as "Traction Park"[3] and "Accident Park",[4] by doctors at nearby hospitals due to the number of severely injured parkgoers they treated. Little action was taken by state regulators despite a history of repeat violations. In its later years personal-injury lawsuits forced the closure of more and more rides and finally the park itself in 1996.
http://www.domainofdeath3.com/actionparkSite with actual pictures, check the comments for stories from employees.
The creepy thing about the slide was the fact that it was never open. It just sat there with nobody near it…like a crime scene waiting to be brown townyzed. The real story about the slide is hard to come by; some say it never opened, some say it opened for a month and injured people, some say that the dummies used during testing came out all mangled with missing limbs.