Case File · FBI · First Saucer Wave (1947-1952) Declassified May 8, 2026 · PURSUE Release 01

Jackson, Minnesota UFO Sighting (August 2, 1952) — FBI Files

UFO Triangle Object

An FBI-documented report from 1952 details the discovery of a metallic substance and burned clover in a Jackson, Minnesota, pasture following a light sighting.

August 2, 1952
Jackson, Minnesota
Source document: 65_HS1-834228961_62-HQ-83894_Section_7
Source document: 65_HS1-834228961_62-HQ-83894_Section_7 · Source: declassified document

Background

On August 2, 1952, in Jackson, Minnesota, U.S. government investigators recorded an unidentified-object incident later released to the public on May 8, 2026, as part of the Presidential Unsealing and Reporting System for UAP Encounters (PURSUE). This incident occurred during a period of heightened national anxiety regarding aerial unidentified phenomena. The early 1950s represented a significant era in the study of Unidentified Flying Objects, characterized by a surge in reports following the Kenneth Arnold sighting of June 1947 and the Roswell incident of July 1947. During this time, the presence of unidentified aerial phenomena was often viewed through the lens of Cold War tensions, as the United States government monitored the skies for potential Soviet technological advancements.

The case was filed with the Federal Bureau of Investigation, which maintained a structured approach to monitoring such reports. At the time, various field offices, including those in Knoxville, Albuquerque, and Los Angeles, followed standing protocols to route UFO reports to headquarters. This centralized system was designed primarily for the protection of vital installations and the monitoring of potential threats to national security. The Jackson report, while localized, was processed through these established bureaucratic channels, reflecting the era’s integration of civilian sightings into federal intelligence-gathering frameworks.

The Incident in Jackson

The documentation recovered from the FBI files describes a specific physical anomaly discovered on a farm in Jackson. A resident of the area reported finding a strange metallic substance located within a pasture. The discovery was accompanied by physical evidence of thermal impact, specifically three triangular patches of burned clover situated directly underneath the material. The presence of these scorched patterns suggested a localized heat source or a physical interaction between the substance and the vegetation.

The timeline of the event includes observations made prior to the discovery of the material. On the Sunday morning preceding the report, a neighbor’s wife observed a steady white light circling the farm. Although the light was noted, the observer dismissed the phenomenon at the time of its occurrence. The resident who filed the report subsequently requested a formal analysis of the metallic material to determine its origin. While the specific number of witnesses to the light or the material’s discovery is not specified in the released document, the physical evidence of the burned clover and the metallic substance remained the primary focus of the report.

Analysis of the Material and Object

The witnesses involved in the report provided specific details regarding the nature of the object and the substance found. According to the verbatim text within the file, the neighbor’s wife witnessed the steady white light while rising to get a drink of water. Regarding the metallic substance, the report noted that the clover appeared to be burned. The observer also provided a preliminary assessment of the material’s arrival, stating that it could not have been dropped from an aircraft because the substance was loose and not contained within any vessel or container.

The physical description of the phenomenon suggests a specific geometry, as the witnesses described the object as being triangular or wedge-shaped. This shape is a recurring element in mid-century aerial anomaly reports. The presence of the metallic substance in a loose state, combined with the scorched earth, remains the central physical mystery of the Jackson case.

Classification and Status

All records released under the PURSUE program are designated as unresolved by the All-domain Anomaly Resolution Office (AARO) by default. The federal government has maintained a neutral stance regarding the Jackson incident, neither concluding that the event was anomalous nor confirming it as a conventional occurrence. The investigation has not ruled out either possibility.

During the 1952 period, several conventional explanations were frequently considered by investigators. These included the presence of experimental aircraft, the deployment of weather balloons—specifically those associated with the Project Mogul series in the late 1940s—and various atmospheric optical phenomena such as sundogs or lenticular clouds. Additionally, astronomical objects like Venus, the Moon, or meteors passing near the horizon were often scrutinized as potential sources for reported lights. The Jackson, Minnesota, case remains part of the broader historical record of unidentified phenomena that continue to be analyzed through declassified federal archives.

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