Sara Welna
Barr Engineering Company, Edina, MN
Activity
2015
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SAND IN THE GROUND HAS NO INTRINSIC VALUE: A CASE STUDY OF LOST DATA
5 Frac Sand in the Midwest: Geology, Mining, Reclamation, and Environmental Issues ITuesday, 19 May 20158:00 AM - 11:40 AMHall of Ideas J