On August 5, a privately funded nuclear reactor switched on for the first time on a ranch outside Lockhart, Texas.
It went from bare ground to a working reactor in about 11 months.
It's a small test reactor for medical isotopes, the radioactive materials hospitals use to find and treat cancer.
Reactors make them by firing neutrons at target materials.
America has imported the most widely used one for decades, and this reactor is proving the process for bigger plants here.
Of the reactors in a new Department of Energy program that lets building run alongside the safety review, it's the first on private land.
The ranch is Proto-Town a hardware campus:
Companies building machines get workshops, open land to test on and somewhere to live, all on one site.
About a dozen are there now, working on driverless bulldozers, heavy-lift drones and robot-built homes.
Two Duke friends,
@joshuafarahzad and
@MerleNye, started it in 2024 while sleeping in a school bus on the site.
In 2025 Caldwell County exempted the ranch from any future county building rules.
The reactor still needed federal safety approval, and got it from the Department of Energy.
In 2022, this same land was the proposed site for Micron's $100 billion chip plant. Micron chose New York.
Four years later, there's a working nuclear reactor on it.