Also, the chemical they're planning to use to do the extraction, hydrofluoric acid, is extremely dangerous. You can't feel the burns at first, and the fluoride

Also, the chemical they're planning to use to do the extraction, hydrofluoric acid, is extremely dangerous. You can't feel the burns at first, and the fluoride reacts with the calcium compounds in your bones-- not pleasant stuff. http://firegeezer.com/2009/08/11/whats-the-hf/ http://firegeezer.com/2009/08/11/whats-the-hf/