The battle is not yet over, insist environmentalists, following a decision on June 22 by the U.S. Supreme Court that allows mining companies to dump waste into lakes and waterways. The court case stemmed from efforts by Coeur d'Alene Mines Corp. to reopen a gold mine in Alaska that has been closed since 1928 and deposit 4.5 million tons of crushed rock and water laced with aluminum, copper, lead and mercury into a small mountain lake. The high court ruled in favor of the company because of a federal regulation adopted during the Bush administration that allows the U.S. Army Corps of Engineers to redefine mining waste and permit its discharge into lakes, streams and rivers.