EE USING AN OIL DRUM CART/DOLLEY TO MOVE A FULL 55 GALLON DRUM IN SURFACE LUBE ROOM. EE PICKED UP THE DRUM WITH THE CART, SLIPPED AND FELL. THE DRUM AND CART LANDED ON TOP OF EE, PINNING EE. EE WAS ABLE TO REACH EE'S CELL PHONE AND CALLED FOR HELP. EE WAS LOCATED IN A MATTER OF MINUTES; THE DRUM WAS LIFTED OFF OF EE AND EE WAS TRANPORTED VIA EMS TO THE HOSPITAL