A FATAL ACCIDENT ON HIGHWAY 17 NEAR LEXINGTON RESERVOIR YESTERDAY MORNING (THUR) CLOSED OFF NORTHBOUND AND SOUTHBOUND LANES. OFFICIALS SAY THE WRECK, INVOLVING A BIG RIG AND AT LEAST 9 VEHICLES, OCCURRED SHORTLY BEFORE 8 A-M JUST SOUTH OF BEAR CREEK ROAD. ONE PERSON WAS KILLED, ANOTHER WAS LEFT IN CRITICAL CONDITION, AND AT LEAST 8 OTHERS WERE INJURED. BOTH NORTHBOUND LANES WERE CLOSED UNTIL 5:30 P-M.