Mississippi sank a 31-ton propane tank and steel tower once used to train firefighters 13 miles offshore, turning old equipment into a long-lasting artificial reef for Gulf fish

A 31-ton propane tank and a steel tower that once helped firefighters practise emergency operations in Mississippi, have found a new purpose underwater. The two structures have been lowered into the Gulf, about 13 miles south of Petit Bois Island, where they are expected to provide shelter for fish and support marine life.