A low speed cooling fan (100) that is designed to cool individuals located i n large industrial buildings. A fan with a diameter between 15 to 40 feet consisting of a plurality of blades (316), with each in the shape of a taper ed airfoil, is driven by an electric motor (304) to produce a very large slowly moving column of air. The moving column of air creates a uniformly gentle circulatory airflow pattern (200) throughout the interior of the building th us promoting the natural evaporative cooling process of the human body at all locations inside the building.
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