Prov nr 21 - Sighting and Material Analysis Report

This document, designated as 'Prov nr 21' and received by FOA:1 on August 22, 1946, details the investigation of a reported light phenomenon near Valla, Appuna socken, Sweden. The incident occurred on the evening of August 11, 1946, at approximately 20:30. Two brothers, Orvar and Kjell Klofsten, observed a light phenomenon that appeared to strike the ground north of their father's farm, Valla gård. The landowner, Oskar Klofsten, reported the event by telephone. An investigator visited the site with the witnesses and discovered burned particles scattered within a 15 to 20-meter radius. These particles appeared to have been pressed into the soil, suggesting an impact or explosion. The location was identified as 400 meters north of a specific point on the General Staff map (Sheet 45, Linköping). The trajectory of the object was described as straight, though the witnesses could not estimate its altitude. Laboratory analysis of the recovered material—described as ten porous, dirty gray, slag-like pieces—revealed the presence of silicon, magnesium, aluminum, sodium, and iron, with a positive reaction for calcium. The official conclusion reached by the laboratory was that the material was likely terrestrial, specifically remnants of rock associated with burnt lime, and that the evidence suggested the material had been lying on the ground for a significant period of time.