RELOCATING SHAKER SCREEN FRAME APPROX 50 FT FROM ORIGINAL LOCATION WITH FORKLIFT. FRAME WAS BEING SET DOWN ON 2 - 6"" X 4"" X 5' WOOD BLOCKS DUE TO SHAFT HOUSING PLACEMENT LOCATED ON FRAME. AS F RAME TOUCHED BLOCKS, IT ROTATED PULLING HIM IN FRONT, AS FRAME FELL IT SANDWICHED HIM BETWEEN IT AND 25"" DIA PIPE.