NEW : An expert says he believes an injection well is related to the University of Ohio quakes . NEW : An energy company spokesman says the wells have never caused any problems . NEW : A Youngstown man says after the tremor , ` ` I could see the earth move '' The quake was centered 10 miles northwest of Youngstown and 1.4 miles below the surface .
NEW : An expert says he thinks an injection well is related to the spate of Ohio quakes . NEW : An energy company owner says the wells have never caused any problems . NEW : A Youngstown man says after the tremor , `` I could see the house move '' The quake was centered 5 miles northwest of Youngstown and 1.4 miles below the surface .