THE ENGINE SUPPORT CROSS MEMBER WAS ON THE FLOORJACK IN FRT OF NEW ENGINE. EE WAS WALING AROUND FRT OF ENGINE TO LEFT SIDE. HIS RIGHT SHIN BUMPED CROSS MEMBER CAUSING IT START TO FALL. HE PUT PRESSURE AGAINST THE MEMBER TO KEEP IT FROM FALLING OVER. THE CROSS MEMBER SUPPORT TIPPED OVER SCRAPPING HIS SHIN & LANDING ON HIS FOOT BEHIND STEEL TOE