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A comment on Cornell wants to drill 2-4mi underground for enhanced geothermal heating. Parent comment

Re:Cornell wants to drill 2-4mi underground for enhanced geo... by etrautmann on Monday September 19, 2016 @06:12PM (#12535203)
It's the rare-earth doping elements that are the issue, not the silicon. We have silicon in extreme abundance.
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Re:Cornell wants to drill 2-4mi underground for enhanced geo... by caf on Monday September 19, 2016 @11:13PM (#12536736)
Typical dopants for solar cells are elements like B and K, not rare earths.
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