Oak Ridge in Roane County, Tennessee — The American South (East South Central)

BNFL, Inc.

The Department of Energy, Oak Ridge Office

— K-25 Site, East Tennessee Technology Park —

BNFL, Inc. Marker image. Click for full size.

Photographed by Darren Jefferson Clay, February 14, 2026

1. BNFL, Inc. Marker

Inscription. As part of a contract with the Department of Energy, Oak Ridge Operations, the BNFL Inc. Project was responsible for the decontamination and decommissioning of the three gaseous diffusion buildings K-33, K-31 and K-29. Within those three buildings were over 1,500 converters.

This specific converter is similar to the converters found in the facilities formerly known as the K-25 site. This converter was used to enrich uranium, which required increasing the percentage of the U-235 isotope.

Located inside the converter were barrier tubes that acted as filters used to separate the heavier U-238 isotope from the lighter U-235 isotope. To enrich even a small quantity of uranium, this process had to be repeated thousands of times.

BNFL Inc. changed its name to BNG America in April 2005.

Topics. This historical marker is listed in these topic lists: Parks & Recreational Areas • Science & Medicine • War, World II.

Location. 35° 55.9′ N, 84° 23.656′ W. Marker is in Oak Ridge, Tennessee, in Roane County. It can be reached from Enrichment Street north of Avenue L,

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on the right when traveling west. Touch for map. Marker is at or near this postal address: 652 Enrichment St, Kingston TN 37763, United States of America. Touch for directions.

Regionally, this marker is in East Tennessee

and in Greater Knoxville.

It is also in the American South,

specifically in the Upper South,

in Appalachia,

and specifically in Southern Appalachia. Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once the original Cherokee Nation,

the territory of the Mississippian Culture,

one of the Confederate States of America,

and the Antebellum South.

Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies: Building K-1000 (approx. 0.4 miles away); K-25 Plant (approx. 0.6 miles away); Happy Valley (approx. 0.6 miles away); The Wheat Colony (approx. 0.6 miles away); To Have a Job (approx. 0.6 miles away); S-50 Thermal Diffusion Plant (approx. 0.6 miles away); Wheat Community (approx. 0.9 miles away); Poplar Creek Seminary (approx. 1.3 miles away). Touch for a list and map

Photographed by Darren Jefferson Clay, February 14, 2026

2. BNFL, Inc. Marker

of all markers in Oak Ridge.

Credits. This page was last revised on February 20, 2026. It was originally submitted on February 16, 2026, by Darren Jefferson Clay of Duluth, Georgia. This page has been viewed 30 times since then. Photos: 1, 2. submitted on February 16, 2026, by Darren Jefferson Clay of Duluth, Georgia. • James Hulse was the editor who published this page.