Montana implements fracking disclosure rules

September 2, 2011 (Billings Gazette) From now on, producers drilling for oil and gas in Montana have to disclose most of the chemicals they are using in hydraulic fracturing, or “fracking,” under rules that recently were implemented.

Fracking is a practice widely used in horizontal drilling. The technique involves pumping about 1 million gallons of water per well underground, plus sand and some chemicals. The slurry is shot at extreme pressure into shale formations to break up the rock and free oil and gas deposits.

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