Commonwealth Edison's nuclear power plant in Bryon, Ill., looms large Thursday, May 30, 1996, in this picturesque town of about 5,000. The huge property tax base provided by the plant since it moved there in the 1970s has benefited the town, especially the Bryon School District. A state tax board ruled recently that the plant was over assessed from 1989 to 1992 which could mean an end to the prosperity the town has enjoyed.
