Materials Composition Study — Recovered Fragment Analysis

Category: scientific. Original document date: June 9, 2022. Released: April 22, 2026. 89 pages.

Summary

Oak Ridge National Laboratory analysis of a fragment recovered from a 2019 Pacific incident. Isotopic ratios for magnesium and bismuth fall within ranges achievable on Earth, but the layered manufacturing structure is described as 'inconsistent with any known commercial or military fabrication process at the time of the originating event.' The report stops short of any extraordinary claim.

Key findings

  • Isotopic ratios are terrestrial — not extraterrestrial in origin
  • Layered manufacturing process is inconsistent with known fabrication of the era
  • Fragment exhibits unexpected mechanical properties under cyclic loading
  • Chain of custody is documented from recovery through analysis

Read the original document on war.gov