Marcellus shale: What is horizontal drilling?
How Long Does A Fracking Well Last?
How does fracking work? - Mia Nacamulli
How it Works: Horizontal Drilling & Hydraulic Fracturing (aka Fracking)
Well pad preparation and drilling in the Marcellus Shale
Marcellus shale: How deep do they have to drill?
Cumulative natural gas wells drilled in Pennsylvania, January 2005-April 2012
Marcellus Shale Drill Site
Pa. Marcellus Shale Seneca Resources gas drilling rig
Marcellus Shale: The process of extracting gas from the ground
Natural gas drilling in the Marcellus Shale: Canonsburg
What is the Marcellus Shale?
energy economist | Shale gas well drilling
The Marcellus and Utica Shale Formations: the Process of Drilling and the Impacts
Drilling Past Rocket Science
Fracking for Gas in the Marcellus Shale
Regulating Horizontal Drilling for Natural Gas in West Virginia
Team 4: 'Gasland' Critical Of Marcellus Shale Gas Drilling
EPA: More Testing Needed Of Natural Gas Drilling Wastewater
Pennsylvania family says gas drilling turning paradise home into nightmare