Deep geologic repository progress—2025 Update

July 25, 2025, 3:00PMNuclear NewsEmily Stein

Editor's note: This article has was originally published in November 2023. It has been updated with new information as of June 2025.

Outside my office, there is a display case filled with rock samples from all over the world. It contains a disk of translucent, orange salt from the Waste Isolation Pilot Plant near Carlsbad, N.M.; a core of white-and-bronze gneiss from the site of the future deep geologic repository in Eurajoki, Finland; several angular chunks of fine-grained, gray claystone from the underground research laboratory at Bure, France; and a piece of coarse-grained granite from the underground research tunnel in Daejeon, South Korea.

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