Employee 1 was operating a dozer's winch from inside the cabin. While attempting to unhook from a D-ring, he had to loosen the tension of the cable. Upon doing so, employee 2 walked over to the winch and grabbed the cable with her left hand. When employee 1 moved the controls to spool out the winch, employee 2's left hand was pulled into the cables. Employee 2 sustained a broken left ring finger and a partial amputation to her left little finger.