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Deep Fission Publishes DOE-Approved Nuclear Safety Design Agreement for Gravity™ Pilot Reactor, Demonstrating Commitment to Transparency

Business Wire | Sep 15, 2026 7:30 AM EDT

WASHINGTON--(BUSINESS WIRE)--Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, today announced the public release of its Nuclear Safety Design Agreement (NSDA) for the Gravity™ Nuclear Reactor. The U.S. Department of Energy (DOE) approved the NSDA as part of the Company’s Reactor Pilot Program taking place in Parsons, Kansas. The NSDA establishes the safety f

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