Today we tested the Superior sand in an even larger cylinder than before. We used our method of the falling head test and after three runs, we would remove the column and wait 5 minutes before running more tests. This was done to make sure that the sand had time to settle. We have not analyzed this data yet, but hopefully we will be able to make a comparison of the small, medium, and large cylinders. Tomorrow we will be running a layered set up with the Superior sand on the bottom and F-65 sand on top. We did not obtain the best of data last time with this set up so we are testing again to hopefully see a better set of data this next time.