After law school, Professor Mank served as law clerk for Justice David M. Shea of the Connecticut Supreme Court. He later became associated with the Hartford, Conn., law firm of Murtha, Cullina, Righter and Pinney, where his emphasis was environmental law. In 1989, Professor Mank became an Assistant Attorney General for the State of Connecticut and held that position for two years before joining the College of Law faculty in 1991. He has authored many articles and book chapters on environmental justice, regulatory reform, and statutory interpretation. He has also worked with the City of Cincinnati on a number of environmental ordinances and implementation matters, including climate change, environmental justice, recycling, and air pollution issues.