A man was killed in what one of the wind companies involved is calling a "freak crane accident" during the installation of a wind turbine in Sibley, Iowa. According to Northern Alternative Energy Inc (NAE), on July 18 a crane stalled while it was being used to place a Micon 600 kW generator unit on top of a 160 foot tower at the Sibley Wind Farm in northern Iowa. An employee of the crane company, Randy Crumline, went to the top of the crane to try and restart the engine. The weight of the crane shifted and since there was no way of controlling the structure it toppled over and the man was killed. There were no other injuries. Asked why the engine of the crane stalled, NAE's Greg Jaunich responded, "No one knows. To this day, no one knows." Government officials are investigating the incident, as is routine when there is a fatality. The probe should be complete by about mid August.