Prov nr 20: Sighting Report and Analysis, Norrköping, 1946

On August 11, 1946, at approximately 20:50, a witness named Fru A Broman observed a small, glowing, greenish fireball in Norrköping, Sweden. The object, estimated to be 10 to 15 centimeters in diameter, appeared to have a flame tail about half a meter long. The witness reported that the object rose to an altitude of 50 to 75 meters, turned to the left, and descended into a garden at Bergslagsgatan 52. Although the witness reported no sound, it was noted that she is quite deaf, rendering this observation potentially unreliable. The following day, the garden owner discovered four pieces of dark, glassy, compact slag that he claimed were not present on the morning of the sighting. These samples were submitted to FOA 1 on August 22, 1946. A spectral analysis of the slag revealed it to be composed primarily of iron and silicon, with smaller amounts of magnesium, manganese, sodium, and titanium. The official conclusion reached on September 16, 1946, was that the material was iron-silicate slag of metallurgical origin, and there was no indication that it originated from a space projectile.