Design for a cryobot; it was never fully built to this design but a partial prototype was completed in 2001.
M. Hecht of NASA
2009-01-01
<p>Bentley, Charles R.; Koci, Bruce R.; Augustin, Laurent J.-M.; Bolsey, Robin J.; Green, James A.; Kyne, Jay D.; Lebar, Donald A.; Mason, William P.; Shturmakov, Alexander J.; Engelhardt, Hermann F.; Harrison, William D.; Hecht, Michael H.; Zagorodnov, Victor (2009). "Ice Drilling and Coring". In Bar-Cohen, Kris; Zacny, Kris. Drilling in Extreme Environments. Weinheim, Germany: Wiley-VCH. <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-3-527-40852-8" title="Special:BookSources/978-3-527-40852-8">ISBN 978-3-527-40852-8</a>. p. 288.
</p>
Illustration is original; text labels have been redrawn to improve resolution.