California Startup Starts Drilling World's First Underground Nuclear Borehole Authored by Jill McLaughlin via The Epoch Times (emphasis ours), Deep Fission, a California-based nuclear energy startup, started drilling the world’s first underground nuclear borehole March 10 in Kansas, taking a major step forward in building small modular pressurized water reactors one mile below the surface. The drill rig at the Deep Fission site in Parsons, Kansas. Deep Fission The test project...