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E-006362LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 100%

Kaliszewski-Donaghue Fast Object near St. Croix Falls

October 10, 1951St. Croix Falls area, Wisconsin, United States

General Mills balloon researchers J. J. Kaliszewski and Jack Donaghue reported a fast object near a tracked research balloon making a shallow dive, brief level segment, sharp turn and steep accelerated climb.

// LINKED CLASSIFICATIONS:Scientific & Observational Types(P-000101)→
Claims are displayed with the source wording, locator, relationship and verification state. Competing claims remain separate rather than being averaged into a single answer.
SOURCE COMPARISON

Encounter · Reported Encounter Observation

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CLAIM-689147reported
“General Mills balloon researchers J. J. Kaliszewski and Jack Donaghue reported a fast object near a tracked research balloon making a shallow dive, brief level segment, sharp turn and steep accelerated climb.”
The UFO Evidence
SRC-002107 · Kaliszewski-Donaghue Fast Object near St. Croix Falls encounter narrative; uploaded PDF pp. 94-94
SUPPORTS
SOURCE COMPARISON

Hall Scientists & Engineers Dossier · Hall Phase 04 Source Description

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CLAIM-689132reported
“Hall opens Section VI by emphasizing reports from professional scientists and engineers and discussing barriers to public reporting.”
The UFO Evidence
SRC-002107 · Section opening and professional-observer discussion; uploaded PDF pp. 81-82
SUPPORTS
SOURCE COMPARISON

Kaliszewski St. Croix Fast Maneuvering Object (1951) · Hall Phase 04 Source Description

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CLAIM-689146reported
“Hall reproduces/summarizes Kaliszewski material that contrasts the object with known aircraft and balloons; that exclusion remains secondary until the original memorandum and tracking context are independently ingested.”
The UFO Evidence
SRC-002107 · Kaliszewski St. Croix Fast Maneuvering Object (1951) source description; uploaded PDF pp. 94-94
SUPPORTS
Kaliszewski-Donaghue Fast Object near St. Croix Falls (October 10, 1951): Evidence Dossier & Witness Reports | ANOMALY | ANOMALY UAP Archive & Controlled Vocabulary