Looks like Arizona forgot the last time they tried this. From Wikipedia: > During the April 6, 1992, execution of Donald Harding in Arizona, it took 11 minutes

Looks like Arizona forgot the last time they tried this. From Wikipedia: > During the April 6, 1992, execution of Donald Harding in Arizona, it took 11 minutes for death to occur. The prison warden stated that he would quit if required to conduct another gas chamber execution. Following Harding's execution, Arizona voted that all persons condemned to death after November 1992 would be executed by lethal injection.