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There are stairs from the top floor down into the soil at least 2 of the conveyor can be used in building all the people out of the building within 1-hour by the stairs inside the building must be ventilated from outside the building. Each floor. Must have open vents to the outside of the building, or they are bottlers systems within fire escape ladders that run automatically when a fire, and the fire escape of the building into the ground, it must be positioned outdoors.
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