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These nuclear reactors fit on a flatbed truck. How safe are they?

The Washington Post · last updated

The Golden Chest Mine in the far northern reaches of Idaho seems an unlikely staging ground for clean power innovation. It is a throwback to an earlier era, the last hard rock gold mine in Idaho, where heavy machinery bores deep into the earth.

But mine owner Idaho Strategic Resources plans to make the operation a showcase for a new energy source: miniaturized nuclear power.