Geo-Challenge 2008
Note regarding sand for testing: We will be using 12/20 Filter Sand from Carmeuse Industrial Sands (formerly Oglebay Norton) in Brady, Texas. Be advised that the brochure contains an error: the first sieve size should be the No. 10 instead of the No. 8, so there is 0 % coarser than the No. 10 sieve. Students may contact the distributor at (325)792-3218 to request samples. Our contact is J. B. Schmidt.