Images of birds covered in oil traveled around the world when supertanker Exxon Valdez in March 1989 ran aground in the Prince William Sound in Alaska and, in the days that followed, leaked close to 40,000 tons crude oil into the fragile waters. For more than two decades, the affected authorities have been working the case and not least the efforts to clean up after the disaster - and now US and Alaska authorities have decided to call off a million dollar damage claim filed against the ship's owner, Exxon Mobil, according to a statement from the US Justice Department.