National Catholic Reporter

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Natural gas

Advances in drilling technology led to fracking's rapid expansion

The history of slick water hydraulic fracturing extends back more than 60 years as America seeks solutions to its seemingly unquenchable thirst for energy.

Also known as fracking, the process has been used to extract oil and natural gas since 1947, said Peter MacKenzie, vice president of operations for the Ohio Oil and Gas Association. He and other industry representatives argued that the process is safe and even when problems occur, companies work to alleviate any concerns.

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July 18-31, 2014

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