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An Expanding Underground Pipeline Network


INTERACTIVE MAPS: Explore all wells and pipelines

HOW "BATTLE LINES" WAS REPORTED
The Marcellus shale drilling boom has tapped a bounty of natural gas worth billions, but Inquirer reporters Joseph Tanfani and Craig R. McCoy found that thousands of miles of high-pressure pipelines carrying the gas to market are being installed with no government safety checks – no construction standards, no inspections, and no monitoring. In fact, state and federal regulators don’t even know where many lines are located.


Marcellus 101
HYDRAULIC FRACTURING
Popularly called “fracking,” the process uses a mixture of water, sand and chemicals to blast open the shale rock, freeing gas trapped in tight pockets to flow to the surface.