Ohio Court Of Appeals: Absolute Pollution Exclusion Bars Coverage For Workplace Coal-Tar Pitch Exposure Claims Posted on January 4, 2018December 10, 2018Author thecicrPosted in Pollution Exclusion Applying Ohio law, the court concluded that Pacific Employers had no duty to defend GrafTech or pay defense costs in connection with claims by dozens of workers at Alcoa smelting plants. . .