Halliburton, nonetheless. They've designed a fracking machine that takes advantage of gravity and solar power and in turn saves a ton of gasoline (and in turn lowers carbon emissions). Good to see.
http://www.businessweek.com/articles/2012-11-29/for-fracking-its-getting-easier-being-green
http://www.businessweek.com/articles/2012-11-29/for-fracking-its-getting-easier-being-green
