EMPLOYEE PLACED LEFT HAND BETWEEN BOTTOM AND MID SHELL OF CRUSHER TO ADJUST GASKET WHILE MID SHELL WAS BEING LOWERED BY CRANE ONTO BOTTOM SHELL. EMPLOYEE'S LEFT HAND WAS CRUSHED. (POST-SURGICAL EVAL.: PROBABLY WILL REQUIRE AMPUTATION OF MIDDLE, RING & LITTLE FINGERS, EACH AT PROXIMAL PHALANGE.)