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Sergey Ershov
Sergiyev Posad, Moscow Oblast, Russia
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Jan. 8, 2021, 8:37 a.m. PST
Geothermal Manufacturing Prize
registered for challenge
Oct. 7, 2020, 1:39 a.m. PDT
Guardians of the Reservoir Challenge
registered for challenge
July 17, 2020, 7:08 a.m. PDT
NASA's Lunar Loo Challenge
registered for challenge
