June 1, 2010 -- The ongoing Deepwater Horizon oil-well blowout is not the worst spill the Gulf has ever seen, though it is the biggest in United States waters. The 1979 Ixtoc I well blowout spewed oil into Mexico's Bay of Campeche for 290 days, or 10.5 months, dumping around 3.3 million barrels of oil into the warm Gulf waters as gas belching from below fed a continuous fire on the ocean's surface. Here, the the oil platform Sedco 135 burns and sinks. Read More