I remember Exxon/Mobil's first ad's dispelling the dangers of fracking using a little simulation, as if they poke thru the earth's crust and simply extract the fuels with limited intrusion. Wake Up.
There was much speculation that DU was being used to excavate the shafts on frack sites a few years ago. I can't find any evidence of it anymore. Memory holed I guess.
Haha! Yeah simple models to convince ;) Thanks for the feedback.