A New Preliminary Hearing Date In Unicoi County General Sessions Court Has Been Set For A Man Accused Of Holding Up An Erwin Convenience Store. 23 Year Old Ronnie Grindstaff, Jr., Is Charged With Aggravated Robbery And Aggravated Assault For Allegedly Holding Up The Quick Stop Market. Grindstaff Is Allegedly To Have Walked Into The Business, Pulled Out A Gun, And Demanded Money From The Clerk. He Will Appear In Court On January 14th.