The prison employs 216 guards, although only about one third of them were on duty when the escape occurred, prison officials say.
After many delays, the escape ultimately occurred on 21 June 1791, and was a failure.
The first escape in facility history occurred on October 28, 2007.
An escape from the Ryan occurred on August 21, 1994, with ten prisoners escaping.
The danger and escape occurred upon a Sunday.
An escape involving two inmates from Spring Creek occurred in 1994.
The escape, which the police said was spontaneous, occurred just after lights were dimmed on the plane.
The escape occurred when the court was preparing to pronounce verdicts against 15 suspects involved in the 1996 bank fraud case.
For some starting values, escape occurs quickly, after only a small number of iterations.
For values within the Mandelbrot set, escape will never occur.