Mark Stebbins

Oil and gas drilling, hydraulic fracturing

A controversial mining technique used to extract oil and natural gas from deep rock deposits by injecting a high-pressure mixture of water, sand, and chemicals underground.

A drilling technique often used in conjunction with hydraulic fracturing, where a wellbore is drilled vertically and then turned to run horizontally through the gas-bearing rock formation.

Pennsylvania

Hydraulic fracturing and natural gas extraction project at Pittsburgh International Airport. Console Energy will drill six vertical wells a mile deep and horizontal offshoots extending a minimum of 8,000 feet to access four layers of shale gas beneath the airport.