Oklahoma worries over swarm of earthquakes and connection to oil industry

The earthquakes come nearly every day now, cracking drywall, popping floor tiles and rattling kitchen cabinets. On Monday, three quakes hit this historic land-rush town in 24 hours, booming and rumbling like the end of the world.

“After a while, you can’t even tell what’s a pre-shock or an after-shock. The ground just keeps moving,” said Jason Murphey, 37, a Web developer who represents Guthrie in the state legislature. “People are so frustrated and scared. They want to know the state is doing something.”