Workers were preparing to fill a rail tanker car with canola oil for shipment. A hose fell into the car, and one worker climbed into the tanker to retrieve it. He was overcome by the nitrogen gas used to preserve the food oil. A second worker climbed into the tanker to see what had happened. Both died of brain damage from breathing in the nitrogen. A third worker went in to rescue the first two, and he was injured but survived. In a similar incident, two workers were cleaning a large tank at a vegetable oil plant. They had used argon […]