Injured was changing cooler pallets with hydraulic ram and push bar(2.5in x 16in)to push out shafts. Push bar stored in the grating on a vertical pallet. EE was between the vertical pallet and adjacent horizontal pallet. The push bar dislodged and fell approx 4 feet striking EE in the groin. The end of his penis was pinched between the push bar and the edge of the pallet.