3 EE'S WERE USING A MECHANICAL SCREW JACK TO RAISE A PORTION OF THE CONE CRUSHER & SCREEN DECK FOR LEVELING PURPOSES. JACK BASE PLACEMENT WAS ON A PIECE OF STEEL I-BEAM 5 1/4" WIDE. JACK BASE WAS 6 1/2" CIRCUMFERENCE. JACK BASE NOT SUPPORTED SQUARELY ON A FIRM LIFTING SURFACE. EE'S USED 94" CHEATER BAR TO PUT PRESSURE ON JACK BASE, CAUSING BASE TO BREAK & THROW EE'S AGAINST BARRIER
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Showing all 23 EE'S WERE USING A MECHANICAL SCREW JACK TO RAISE A PORTION OF THE CONE CRUSHER & SCREEN DECK FOR LEVELING PURPOSES. THE JACK FAILED RESULTING IN INJURY TO 2 OF THE EE'S. THE JACK BASE WAS N OT SUPPORTED SQUARELY ON FIRM LIFTING SURFACE. JACK FAILED USING A CHEATER BAR PUTTING PRESSUREON UNSUPPORTED BASE OF THE JACK CAUSING IT TO BREAK. THREW EE'S AGAINST CONCRETE SUPPORT BARRIER