Gas-drilling companies have long argued that proof did not exist that their 'hydrofracking' technique did not contaminate wellwater. Now it turns out that drilling companies have the data that would settle the question, but are keeping it secret.
Abrahm Lustgarten reports for ProPublica May 17, 2011.
Gas Companies Withhold Data That Would Show Whether Drilling Is Safe
Source: ProPublica, 05/18/2011