US citizens: call on the EPA to [ require frackers to disclose all the chemicals they use ]( https://secure.nrdconline.org/site/Advocacy?cmd=display&page=UserAction&id=3579 ) .
Ссылка: https://stallman.org/archives/2014-jul-oct.html#10_September_2014_%28Urgent%3A_Require_frackers_to_disclose_all_the_chemicals_they_use%29