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E-009518LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 100%

Delphos Luminous Object and Persistent Ground Ring

November 2, 1971Johnson family farm near Delphos, Kansas, United States

Ronald Johnson reported a brilliantly luminous mushroom-shaped object hovering near the family farm. A glowing/white ring at the site reportedly persisted and displayed unusual water-repellent behavior; Hall reviews multiple later laboratory analyses with mixed or disputed interpretations.

// LINKED CLASSIFICATIONS:Dome / Mushroom / Beehive(C-000260)→Physical Trace & Environmental Effects(P-000103)→
Claims are displayed with the source wording, locator, relationship and verification state. Competing claims remain separate rather than being averaged into a single answer.
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Encounter · Hall Volume II Encounter Claim

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CLAIM-950035reported
“Johnson reported a luminous mushroom-shaped object and a persistent ring at the site with unusual water-repellent properties.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · November 2, 1971 Delphos case; uploaded PDF pp. 73-76
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Encounter · Hall Volume II Source Caveat

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CLAIM-950036disputed
“Hall reviews numerous analyses of Delphos material and notes contradictory or inconclusive results, while later chemist Erol Faruk argued that a metal-salt deposit was unusual and difficult to explain as a hoax.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · Delphos laboratory-analysis discussion; uploaded PDF pp. 74-76
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Hall Volume II Physical and Instrumental Evidence Framework · Hall Volume II Evidence Claim

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CLAIM-950010reported
“Section I summarizes physical/instrumental evidence as radar tracking correlated with visual observations, ground and foliage traces, physiological effects, electromagnetic effects on vehicles, and photographs.”
The UFO Evidence, Volume II: A Thirty-Year Report
SRC-009500 · What Physical and Instrumental Evidence Is There for UFOs?; uploaded PDF pp. 71-71 · PRIMARY SOURCE
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