Oklahoma had it's oil boom in the 1920's. There were a lot more wells drilled then than now.
"Fracking" is short for fracturing the tube through which the well was drilled with explosives
to allow the oil to enter the well.
All of those early wells were "fracked" but the earthquakes started when?
Fracking is an old method its been around for years and years,so has dishonesty.
Fracking experiments was in 1947 and started being used commercially in 1949.
Small quakes have always been felt in Oklahoma and the first recording of one was in 1918.
The ones that Oklahoma is experiencing now is because of the New Madrid fault line, not fracking.