FILE - Part of the Didion Milling Plant in Cambria, Wis., lies in ruins following an explosion in this June 1, 2017 photo,. A federal grand jury has charged a milling company with fraud and conspiracy in connection with the explosion that killed five workers in 2017. Court records indicate the grand jury indictment was announced Thursday, May 12, 2022, against Didion Milling Inc. and company leaders. (John Hart/Wisconsin State Journal via AP, File)