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You can slowly bring that pipe up, almost like pouring concrete. and, again, keep adding as much as you want until you get the leak controlled to the level that you want. there are some concerns about actually fully plugging it because of the back pressure. but here, we can control it and control the flow. >> has this been applied anywhere else? i know certainly we haven't seen anything like this gulf oil spill -- but anywhere else this has been tried out in the real world? >> yeah, actually the 1979 toxic spill, they used a combination of steel and lead balls to significantly reduce the flow....

Kill is the way to go which is what the relief well will be classified as. >> so how fearful should we be about the structural integrity of that entire well? i doubt that it's degrading at this point. but let's say if we put a big valve on top of the blowout preventer and turned it shut, that would put a tremendous amount of back pressure on to that casing, well casing. and that might be a bad idea at this point. >> i suspect it would be. all right. thank you for your expertise. thanks for the work you're doing. >> thank you. as the oil spill gets closer to their town, residence are fighting...

Others independent experts said in the very beginning was that this is oil plus gas. and so roughly 30% of the total volume, the oil plus gas, will actually turn into oil. will actually materialize as oil. >> i was going to say, let's say it's 60,000 right now. if they're collecting 15,000 to 20,000 a day, what, still 40,000 spills spewing out. is that right? >> that's correct. i think that math is 100% correct. and the reason that we can do this is that the top hats of the cap that's on there now doesn't exert a whole lot of back pressure on the well. and so we can assume that the flow that's...

Experts said in the beginning is that this is oil plus gas, and so roughly 30% of the total volume the oil plus gas will actually turn into oil. >> so -- >> it materializes oil. >> so, say it is 60,000 on the high end right now, and if they are collecting 15 to 20,000 a day, what still 40,000 still spewing out, is that right? >> that is correct. i think that math is 100% correct. and the reason that we can do this is that the top hat, the cap that is on there now, does not exert a whole lot of back pressure on the well. and so, we can assume that the flow that is coming out of there today is t...

>> well, representative for mcgraw said he received treatment on site and will be doing fine this was his last stop and this would be in richmond, virginia. un security council expecting meeting with kim jong un. while hopes are high of denuclearization, the administration expecting to scale back pressure to rogue regime. good morning, doug. >> heather, good morning. a lot of details here have to be worked out but the diplomatic breakthrough is sending shock waves around the world and potential for a sit-down between president trump and north korean dictator kim jong un has found supporters on...