THE MAINTENANCE TEAM WAS LOWERING A HEAVY STEEL TABLE AT THE ROLLER MILL #2 MILL BASE. THE SENIOR MECHANIC INSTRUCTED THE OTHERS TO MOVE OUT OF THE WAY. AS THE TABLE WAS BEING LOWERED, IT FELL TO ONE SIDE AND PINCHED THE EMPLOYEE'S LEFT ARM BETWEEN THE TABLE AND THE MILL CONCRETE BASE. THE TEAM WAS USING A CHAIN-FALL BUT SHOULD HAVE USED ADDITIONAL LIFTING DEVICES TO CONTROL TABLE.