All cases / Rectangles / Oak Ridge square

Oak Ridge square

December 7, 1951, 8:15 a.m.
Oak Ridge, Tennessee, USA

Unresolved
Representative drawing from the Rectangles page, not this specific sighting.
"square"The witness's own shape words

What happened

A white-gray square, about 20 ft on a side and not shiny, rose above a ridge into the clouds and came back down, twice. Each pass took 30-40 seconds. Oak Ridge was a secret nuclear site and produced several Blue Book unknowns.

Witnesses

J. H. Collins, Atomic Energy Commission guard

Explanation

Unresolved

Filed by Project Blue Book as unknown.

Sources

  1. The Black Vaulttheblackvault.com