Undeclared uranium hitches a ride on cobalt exports from Congo, study says

August 7, 2026, 9:29AMNuclear News

Philippe (left) and Manzuk quantified the amount of uranium that has been exported from the DRC in cobalt shipments or left behind in the environment. (Photo: Joel Hallberg/UW–Madison)

Researchers at the University of Wisconsin–Madison and Princeton University have published a study in Nature Communications that calls attention to a blind spot in nuclear nonproliferation: The Democratic Republic of the Congo (DRC) has exported thousands of metric tons of uranium, and there is no accounting for where it has gone.

In partnership with Lighthouse Reports and the Financial Times, UW–Madison nuclear engineering professor and nuclear security expert Sébastien Philippe and Ryan Manzuk, a geologist and research fellow in Philippe’s group and at Princeton, conducted the study using countrywide mineralization and geochemical data.

UW-Madison: A Midwestern nucleus of fission and fusion

July 31, 2026, 2:56PMNuclear News
Grainger Professor of Nuclear Engineering Paul Wilson (third from left) shares details about UW-Madison’s TRIGA reactor with Wisconsin Gov. Tony Evers (second from left) in February 2026. (Photo: Taylor Wolfram/UW-Madison)

With more than six decades as a top-ranked program in its rearview, the Department of Nuclear Engineering and Engineering Physics (NEEP) at the University of Wisconsin–Madison is hardly slowing down. In fact, NEEP is continuing to grow and develop its faculty, curriculum, and research.