. >> you might call robert tillory lucky, he says he survived a butane hash explosion in 2009. >> going >> we're going to use butane. >> he went right back to extracting thc. >> you do it out in a well ventilated area like this. >> but haven't you seen people outside that have done that and it doesn't go well either? >> i've never witnessed it not going well unless there was a spark or flame around. >> he says he has found a safe way to work with butane and wants to educate others. >> you make it every day? >> i make it every day. >> university of colorado's burn unit dr. gordon lindbergh is the hospital's medical director. lindbergh noticed there was something different in the butane accidents. >> we were giving them the narcotics that we usually used and it wasn't working. >> on a hunch the doctor gave them maranol more thc. he noticed a difference right away. >> their pain was easier to manage they didn't throw up, they were able to keep calories in. >> he believed they were on marijuana withdrawal and needed the thc to recover. >> what i worry about is how much marijuana people are