Days after the historic magnitude 5.6 earthquake in Pawnee County, officials are installing hundreds more seismometers.
Scientists from Cornell University started delivering the 400 instruments this week with the intent of monitoring the newly-discovered geological fault line that had previously been unknown to researchers.
Oklahoma State University scientists will help in the project of burying the seismometers.
Three more earthquakes shook the state on Tuesday and were focused in Grant County near Medford. One was a magnitude 3.9 quake, another was 3.7 and a third was 3.5.
Learn more in this report from Katiera Winfrey at News on 6.