Hot Dry Rock Collection

At the Earth's Core

The geothermal systems, or dry rock geothermal (HDR), concept evolved in an interesting, although circuitous way. R. M. Potter, who was involved in the nuclear rocket program at Los Alamos, developed in 1960 the initial concept of a rock-melting drill which employed a heated refractory metal bit.
He thought of the original concept while reading Edgar Rice Burrough's At the Earth's Core.

- LA-UR-81-0579

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