Wilbert Smith Archives Files Box 1131 08 1131-08-p031

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...