associated with this accident. one concussion. oil industry veteran bob cavnar who blogs put us on to in this week. this is incredible. that frac stack which went applying which hempville county is part of the truck -- it's like a blowout preventer, you might remember from the "deepwater horizon" disaster. the frac stack is supposed to function sort of like that, to keep the well head under control if something goes wrong. well, this is the hole where the well head used to be after this kerfuffle in hempville county. spectacular and very visible failure in the world's most profitable industry is often a very, very visible form of failure. and in that regard, i see you hempville, texas, fracking accident and i raise you the career of one very senior shell oil executive. a very weird story. that's coming up.