Project 10073 Record Card — Marshalltown, Iowa, 3 June 1958

This document details a sighting and recovery incident occurring on June 3, 1958, in Marshalltown, Iowa. A resident reported that an unknown object struck the roof of their trailer house between 9:00 PM and 9:30 PM, producing a sound described as a loud rifle report. Upon investigation, the resident discovered multiple fragments and collected the largest piece. Following a radio broadcast from station KFJB regarding Soviet satellite information, the resident and his wife suspected the object might be a meteor fragment and submitted it to the local Ground Observer Squadron for investigation. The specimen was forwarded through military channels, including the 4715th Ground Observer Squadron and the 20th Air Division, to the Air Technical Intelligence Center at Wright-Patterson Air Force Base. Military personnel, specifically M/Sgt Brown of the 328th CAMRON, performed a radioactivity check on the object and found it to be completely non-radioactive. The final assessment recorded on the Project 10073 record card identified the object as volcanic rock or volcanic debris. The physical specimen was subsequently cataloged and stored in an artifact room.