The Red Cliff Band of Lake Superior Chippewa is having another go at the munitions barrels dumped into their waters by the Army Corps of Engineers during the Cold War years.

Nearly 1,500 55-gallon drums were interred beneath the lake on orders of the U.S. Department of Defense from 1959 to 1962. In 2012 the band received $3.3 million in federal funds to pull up 70 of them, but stopped at 25 after they found 22 of the containers to be packed with live ammunition. The band’s contractors wrapped the barrels securely and promptly returned them to the depths...