Photo: USCG

Parts of the Arthur J., a 110-foot commercial dredge, can still be seen above the waters of lower Lake Huron after it sank, July 19, 2012. The Coast Guard is coordinating the response in order to ensure the safety of responders and the public, control the source of diesel fuel spilled, and minimize any further release. U.S. Coast Guard photo courtesy of Station Port Huron, Mich.