PAWNEE COUNTY, Oklahoma - They've done quite a bit of cleaning up in Pawnee County since Saturday’s earthquake, but all around town, you can still see plenty of yellow tape and bits and pieces that fell during the earthquake.

A group from Cornell University is delivering 400 seismometers to Pawnee County. One Oklahoma earthquake expert is going out with the, and he expects to stay busy.

Mark Crisom enjoys the quiet life in the country.

"I'm just an Okie; I sit out here in the middle of nowhere watching wild turkeys," Crisom said.

But, he also keeps an eye out for earthquakes, monitoring a seismic station.

"The seismometer is sitting right under here, there's the wires coming from the seismometer," he said.

It's a hobby that keeps Crisom busy; and when the powerful earthquake hit Saturday, Crisom dove from his porch into his yard.

"I can hear them falling and stuff falling all over the place and I thought, ‘Oh my God, it's gonna knock the house down,’" he said.

For nearly two years, Crisom has had a seismometer donated by OSU buried in his yard. Since then, he says he's spent thousands of hours analyzing readings.

Since this weekend's powerful quake, he says experts, including some from Cornell University, have been touring the area, adding more seismometers around the fault line.

Based on what he knows, Crisom says they have a busy job ahead of them.

"The whole area is split up into faults,” he said. “Some of them are maybe 15 or 20 miles long, some of them maybe 50 or 60, some of them 300, there's one that 1,600 miles at least."

Crisom said he plans to go out with Cornell University representatives to bury the seismometers.

Tuesday, three more earthquakes shook Oklahoma in Grant County, near Medford.

One was a 3.9 magnitude quake, another was a 3.7, and the third was a 3.5. There were no reports of damage or injuries.