Report on recovered remains after impact in connection with observed fire phenomena

This memorandum, dated July 26, 1946, and issued by the Air Defense Department (Luftförsvarsavdelningen), details the analysis of various physical remains recovered following reports of observed fire phenomena in Sweden. The items were submitted to the Swedish National Defence Research Institute (Försvarets forskningsanstalt) for examination under the direction of laboratory lead K.I. Skärblom. Initial testing for radioactivity yielded negative results for all samples. The majority of the recovered items, including samples from Njurunda, Glanshammar, Stöde, Riksby, Enskede, and Norrtälje, were identified as various forms of slag, organic resin, or fat-like substances. The report concludes that these items likely had been present in the terrain for an extended period and were not associated with space projectiles. However, the report highlights two specific findings of greater interest: a sample from Brusaholm consisting of small grains found in a person's hair following a 'gravel rain from a clear sky' on July 9, and a metal lump the size of a five-öre coin found in Stigsjö after an observed impact on July 15. The Stigsjö object was noted to be strongly magnetic and composed largely of iron. At the time of the report, analysis of these two items was still ongoing, as was the initial assessment of several other slag-like samples from locations including Brantshammar, Lunde, Gnarp, and Löre.