WTF Fun Fact – Nuclear Tunnel Boring Machine

In 1972, The Los Alamos National Laboratories patented a nuclear tunnel boring machine, claiming it could reach depths of 18+ miles. It uses molten lithium to melt through rock, leaving behind a tunnel with a glass-like finish. – WTF Fun Facts

Source: METHOD AND APPARATUS FOR TUNNELING BY MELTING – ATOMIC ENERGY COMMISSION USA (freepatentsonline.com)

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