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National Nuclear Security Administration (U.S.)

Department of Energy

logo located by Dave Fowler, 30 April 2021

NNSA
Y-12 National Security Complex
Y-12 75th Anniversary
Sandia National Laboratories

See also:

NNSA

logo located by Dave Fowler, 27 April 2021

The NNSA is an agency of the US Department of Energy, and has a flag, that appears to be a gold logo on a blue field. The quality of the images from the entrance of the Pacific Northwest National Laboratory here are not great. (In these photos, the NNSA flag is second to last between the Washington and VPP Star Site flags).

I've also seen what appears to be a white version used indoors, but the quality of those photos is even worse.

Presentation on Wikipedia: https://en.wikipedia.org/wiki/National_Nuclear_Security_Administration
Dave Fowler, 27 April 2021

Y-12 National Security Complex

image by Tomislav Todorovic, 27 April 2021

Y-12 is a Department of Energy nuclear weapons facility in Tennessee. While the standard logo is black with a red atomic orbit, the flag has a blue logo with a gold orbit.

Presentation on Wikipedia:
https://en.wikipedia.org/wiki/Y-12_National_Security_Complex

Dave Fowler, 27 April 2021

A larger photo: https://www.alamy.com/stock-photo-oak-ridge-tennessee-the-y-12-national-security-complex-which-produces-36263024.html reveals that the inscription "National Security Complex" is actually blue, not black as might be expected based on the logo.
Tomislav Todorovic, 27 April 2021

image by Tomislav Todorovic, 27 April 2021

A variant also exists without the inscription "National Security Complex", with the shade of blue somewhat darker, but still lighter than in the national and state flags, and the ratio of about 1:2. It can be seen here: https://www.labpartnering.org/labs/y12#experts
Another photo: https://www.facebook.com/y12nsc/photos/a.369211153109222/407721392591531/?type=3 clearly displays the same place and the same flag, although the colors may look darker (the same is also true for the other flags); however, it reveals the flag ratio better.
Tomislav Todorovic, 27 April 2021

logo located by Dave Fowler, 27 April 2021

This version of the logo is also used in black and red colors instead of blue and gold. The photo: https://destinationwwii.com/manhattan-project-sites-in-oak-ridge-tennessee/ reveals that the ratio is about 3:5, the same as in the first flag variant.
Tomislav Todorovic, 27 April 2021

Y-12 75th Anniversary

logo located by Dave Fowler, 27 April 2021

In one of the articles below, there is a photo with two additional flags:
*Y-12 75th Anniversary, logo on white
*United States Energy Research and Development Administration (1974-77, now defunct). See: https://en.wikipedia.org/wiki/Energy_Research_and_Development_Administration
ERDA flag was a seal on white.
Dave Fowler, 27 April 2021

Sandia National Laboratories

image located by Dave Fowler, 27 April 2021

Sandia Labs has had at least two, possibly three flags over the years, reflecting the contractor that operates the facility:

1 - with Martin Marietta logo
2- with Lockheed Martin logo
3 - with no logo

Flag is white, with logo centered on white, a wide blue stripe with contractor name in white, above a small white stripe, and a vertical black stripe along the hoist.

Presentation of Wikipedia: https://en.wikipedia.org/wiki/Sandia_National_Laboratories

Dave Fowler, 27 April 2021

Logo

image located by Dave Fowler, 27 April 2021