Mining Not A Factor In Weekend Earthquake
A University of Kentucky geologist says the 4.3 magnitude earthquake that shook portions of Ohio
and several other states on Saturday was too deep to be induced by the region's underground coal mining and surface blasting activity. Zhenming Wang says the quake occurred 12 miles below the surface, too deep for underground mining to have been a factor. Wang says it happened near the Eastern Tennessee Seismic Zone, which receives a four-magnitude quake every five to ten years.