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25 Apr 2011: U.S. Company Halts “Fracking”
While It Investigates Causes of Blowout

A large U.S. producer of natural gas from underground shale formations says it will suspend the controversial drilling practice of hydraulic fracturing, or fracking, at seven well sites until it has investigated the causes

High-Risk Energy Boom
Sweeps Across North America

Energy companies are rushing to develop unconventional sources of oil and gas. So far, Keith Schneider writes, government officials have shown little concern for the environmental consequences.
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behind a drilling accident last week. Chesapeake Energy has halted its fracking operations following a blowout in Bradford County in northeastern Pennsylvania that led to a spill of thousands of gallons of drilling fluid. Fracking — which involves blasting a mixture of water, sand, and chemicals deep underground to shatter shale formations and free natural gas trapped within — now accounts for 23 percent of U.S. natural gas production. But the rapid spread of hydraulic fracturing is causing increasing concern among environmentalists and some local residents, who contend that the process is leading to pollution of water supplies in regions rich in shale-gas. Chief among these regions is the Marcellus Shale formation, which extends across various eastern states, including Pennyslvania. Because of these concerns, fracking is currently banned in some regions, including the watershed for New York City’s drinking water supplies.

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