Deckhands on a Sandridge Energy oil rig change out a drill pipe in a fracking operation on the Oklahoma border in Harper County, Kan., in February 2012. A 3.8-magnitude quake in the area on December 16, 2013, rattled windows, cracked walls and shook furniture.
Deckhands on a Sandridge Energy oil rig change out a drill pipe in a fracking operation on the Oklahoma border in Harper County, Kan., in February 2012. A 3.8-magnitude quake in the area on December 16, 2013, rattled windows, cracked walls and shook furniture. MCT
Deckhands on a Sandridge Energy oil rig change out a drill pipe in a fracking operation on the Oklahoma border in Harper County, Kan., in February 2012. A 3.8-magnitude quake in the area on December 16, 2013, rattled windows, cracked walls and shook furniture. MCT

National

May 06, 2014 9:35 AM

Researchers warn Oklahoma quakes linked to fracking boom could get stronger

Suggested for you

  Comments  

Videos

Nation & World Videos