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Bruce Petty
Mount Shasta, California, United States
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Sept. 30, 2018, 11:59 a.m. PDT
Gerdau Digital Scrap Challenge
registered for challenge
June 9, 2018, 8:01 a.m. PDT
Solar Tracking Challenge
registered for challenge
Nov. 17, 2016, 7:12 a.m. PST
Space Poop Challenge
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