Aluminum sheet found in Grand Rapids

Summary

In March 1961, a sheet of aluminum alloy measuring 3/4 inch by 18 feet was found in Grand Rapids, Michigan. The object was discovered on the ground, and no further information was provided. The U.S. Air Force logged it as a fallen object, but it was unknown whether it was related to a weapon or an aircraft. The case was evaluated as insufficient for a definitive assessment.

The Office of Special Investigations (OSI) sent an agent to the site, but no additional reports were received. Although it was considered possibly an aerial object or a balloon, its origin could not be determined. This document is part of the records from Project 10073, which documented unidentified object sightings.