Elon Musk @elonmusk
@emenietti @chafkin Yes, but only deep in solid rock, where the walls are self-supporting and concrete reinforcements arguably aren't needed — PolitiTweet.org
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Fri Feb 17 15:55:44 +0000 2017
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Likely AvailableElon Musk @elonmusk
@emenietti @chafkin Yes, but only deep in solid rock, where the walls are self-supporting and concrete reinforcements arguably aren't needed — PolitiTweet.org