figure out how much oil could be leaking into the waters off louisiana. more than 300,000 gallons could spill into the gulf based on the amount of oil the rig pulled out daily. there was also diesel fuel on board. >> right now we have observed from the air a one by five mile sheen of crude oil mix and light sheen, rainbow sheen. we do not have an estimate of the amount of crude emanating from the well head. the containers were compromised during the explosion that we observed today, but suffice it to say that 700,000 gallons of diesel is either still intact and below the surface or it's gone up with the explosion. >> air and water rescue teams continue to search for the 11 people missing since the catastrophic blast. officials say it is still possible that they may find them alive. but they fear the missing workers may have been near the site of the explosion and unable to escape. an investigation is under way to