arm, like having a compress. they would take a layer of mud and put that on top of it and cap that off with a layer of concrete. those are the three options they are looking at today. the first one, of course, the pipe, 6-inch pipe will take place today. all eyes are watching that closely. we'll pass the information along. keeping our fingers crossed on that one. >> we're hearing from some experts that based on the video released yesterday, the flow of oil may be greater than originally estimated. >> reporter: that's where it gets pretty interesting. there's professor who writes a book on the flow rate of liquid. he says he's able to determine how much is coming out. he was on "anderson cooper" last night. >> you have no doubt that is way, way low? >> right. >> could be as high as 70,000?