A two-vehicle accident in Sullivan County Thursday afternoon left both drivers injured. State Troopers report 74-year-old Michael Gray of Green City was taken to University Hospital in Columbia with serious injuries and 51-year-old David Chapman of Milan had minor injuries and was taken to Sullivan County Memorial Hospital. The accident happened about 4:10 pm on Highway 6 near Green City, as Chapman was passing and Gray made a left turn into a driveway. Both vehicles overturned. Neither driver was wearing a safety belt.