Two months ago, U.S. EPA wrote nine major natural gas drilling companies a letter. It politely asked the recipients to voluntarily tell agency officials the secret brew of chemicals they use to "frack" gas from the shale deposits.
EPA wasn't even planning to make the ingredient list public, a policy the industry is fighting tooth-and-nail in Congress. Instead, it just wanted the information to help with a crucial first-ever federal study of the health and safety risks of hydraulic fracturing, a drilling technique that has already ruined water and air quality in towns across the country and has proceeded unregulated thanks to the Dick Cheney-pushed "Halliburton loophole" passed in 2005.