Marcellus Shale Drill Rig
![Image: Marcellus Shale Drill Rig](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/Marcellus_Shale_Drill_Rig.jpg?itok=fKRi0POt)
Detailed Description
A drill rig at a well site in the Marcellus Shale gas play of southwestern Pennsylvania.
Sources/Usage
Public Domain.
A drill rig at a well site in the Marcellus Shale gas play of southwestern Pennsylvania.
Public Domain.