A former mayor of the southern Illinois community of Saint Libory has died in a work-related accident.  The Daviess County Coroner’s Office in Kentucky said 67-year old Richard “Preacher” Thessing was killed Monday when a metal door frame fell on him in Owensboro.  The Belleville News Democrat reports Thessing was working as a truck driver and was unloading the metal door frame at the time. Workplace safety officials are investigating the incident.  Thessing was a retired coal miner and semi-retired truck driver who served as the mayor of Saint Libory for 28 years.