An OSHA investigation has determined that Aludyne Columbus LLC, which operates as Aludyne Columbus Foundry, exposed its workers to respiratory and electrical hazards. OSHA was investigating a complaint when the agency learned that a maintenance worker at the auto parts manufacturing plant was severely injured from an electrical transformer explosion, causing OSHA to open a second investigation. The employee was attempting to replace a blown fuse on a transformer when they were injured by an arc flash.