EE WAS LOWERING A SUBMERSIBLE PUMP INTO A PREXIPATOR TANK WHEN HE STOPPED AND ALLOWED IT TO FREE FALL. THE PUMP STARTED TO FREE FALL TOO FAST WHEN HE ATTEMPTED TO FLIP THE STOP BACK. UNSUCCESS FUL, HE THEN TRIED TO GRAB THE CRANK HANDLE WHENTHE JAMMED HIS THUMB. ON 1-5-01, EE HAD SURGERY ON HIS RIGHT THUMB.