They are going to build a steel case place over the leak with pipe on top case sending the leaking oil to tanker ships. They said will take 4 months to do this. Photo of cases http://news.yahoo.com/s/ap/20100427/ap_on_bi_ge/us_louisiana_oil_rig_explosion If the well cannot be closed, almost 100,000 barrels of oil, or 4.2 million gallons, could spill into the Gulf before crews can drill a relief well to alleviate the pressure. By comparison, the Exxon Valdez, the worst oil spill in U.S. history, leaked 11 million gallons into Alaska's Prince William Sound in 1989.