Wilbert Smith Archives Files Box 1131 08 1131-08-p033

Document Text (OCR)

5. Skyquakes: Unexplained aerial explosions usually attributed to supersonic aircraft. Many undoubtedly can be explained in this way, but some remain a mystery. Some reports preceded invention of airplane, Possible UFO connection, NICAP is gathering evidence, 6. Ice-falls: Unexplained falls of large chunks of ice, frequently attributed to aircraft icing, Many too large for aircraft icing or hailstones have fallen when icing conditions were not present in the atmosphere. Some reports preceded...