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Originally posted by Senor_Vicente
...the whole "Leaves glass walls" is crap
1980s documents from Los Alamos National Laboratory and from Texas A&M University (under contract to NASA) indicate that there are plans to use "nuclear subselene tunneling machines" to melt tunnels under the Moon's surface, to make living, working, mining and transportation facilities for a lunar colony.
A 1986 Los Alamos report calls for using a fission powered, nuclear subselene to provide the heat to "melt rock and form a self-supporting, glass-lined tunnel suitable for Maglev or other high-speed transport modes." The report recommends burrowing beneath the surface because of the harsh lunar environment. (This would apply to Mars as well.)