About 50 workers at two salvage operations in the Fox Cities area are out of a job because their boss is in prison and the state has revoked the business licenses. Gibson Iron Metal and Auto in Neenah and Fox Valley Iron Metal and Auto Salvage in Oshkosh have until the end of the year to process or recycle the vehicles remaining on their lots. Owner Sterling Kienbaum is serving an 11-year prison sentence for a multi-million dollar scheme to defraud a Fond du Lac business. Prosecutors said Kienbaum loaded scrap vehicles he was selling with dirt to increase their weight and the amount of money he received for them.