That honor probably goes to David Zatezalo, who was nominated to be the assistant secretary for mine safety and health at the Department of Labor. Until 2014, Zatezalo was the chief executive of Rhino Resources, a Kentucky coal company. In 2011, Rhino was faulted for the death of one of its miners, who was killed by falling rocks caused by inadequate support beams. In 2013, a subsidiary of the company was blamed for a similar accident that killed a machine operator. The agency that went after Rhino in both those instances was the Labor Department’s Mine Safety and Health Administration, the very agency Zatezalo is now in line to lead.