Abstract: ON NOVEMBER 4, 1985, EMPLOYEES #1 AND #2 WERE TRYING TO DISLODGE APS PLASTIC CHIPS INSIDE A CLOSED CRYOGENIC HOPPER. WHEN THE UPPER HATCH OPENED, NITROGEN GAS ESCAPED, ENVELOPING THE EMPLOYEES. EMPLOYEE #1 LOST CONSCIOUSNESS AND FELL ABOUT 4 FEET INTO THE HOPPER. EMPLOYEE #2, DAZED, FELL FROM THE LADDER ABOUT 10 FEET TO THE CONCRETE FLOOR. EMPLOYEE #1 WAS DIAGNOZED AS SUFFERING FROM HYPOXIC ENCEPHALOPATHY, BRIEF REACTIVE PSYCOSIS AND A CRYOGENIC BURN ON HIS RIGHT HIP. EMPLOYEE #2 SUFFERED A FRACTURED RIGHT SCAPULA, CUTS AND ABRASIONS. THE EMPLOYEES WERE INADEQUATELY TRAINED IN THE NATURE AND HAZARDS OF THE PROCESS.