Day & Zimmermann, Deep Fission Partner to Build Underground Small Modular Reactor

PHILADELPHIA, June 2, 2026 /PRNewswire/ -- Day & Zimmermann (D&Z) and Deep Fission, Inc. (Deep Fission) announced today their partnership in the construction of Deep Fission's Gravity Nuclear Reactor, the company's proprietary underground nuclear reactor. Deep Fission is an advanced...