THE OPERATOR BACKED UP TO THE PILE WITH A BIN-TRUCK ON AN INCLINED AND BERMED RAMP TO DUMP HIS LOAD. WHEN HE RAISED THE BOX TO THE FULLY EXTENDED POSITION THE ENTIRE LOAD WOULD NOT RELEASE AND THE OPERATOR ATTEMPTED TO MOVE THE TRUCK FORWARD. THE TRUCK STARTED TO EASE OVER ONTO ITS PASSENGER SIDE WITH THE BOX COMING TO REST ON THE BERM. INJURIES CONSISTED OF MINOR BRUISES CUTS SCRA