gdp's Comments en-us https://www.intensedebate.com/users/1406469 Comments by lbs Daily Camera.com: : Clean-air advocates, mining supporters square of over plans to shut Valmont, repower other plants - http://www.dailycamera.com/boulder-county-news/ci_16163096#IDComment100710348 People who think natural gas is clean are fooling themselves. Oil and gas drilling is a huge source of ground-level ozone which causes serious breathing problems. Fri, 24 Sep 2010 14:55:33 +0000 http://www.dailycamera.com/boulder-county-news/ci_16163096#IDComment100710348