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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Deep geologic repository progress—2025 Update
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.
Philip Thullen
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1257-1265
Result of Large Experiment and Plasma Engineering | doi.org/10.13182/FST91-A29514
Articles are hosted by Taylor and Francis Online.
ZTH is a reversed field pinch, magnetically confined fusion experiment which is under construction at the Los Alamos National Laboratory. Construction began in October 1985, and will be completed in late 1992 or early 1993. ZTH will provide information about the physics and engineering operation of a plasma confinement alternative to the tokamak, which has the potential for development into a compact reactor system. The following discussion will give the reader: a general overview of ZTH and its supporting equipment, a brief indication of the present status of construction and an indication of future activities.