My son David is now an upperclassman in college and a student and a teaching assistant in the Department of Earth Sciences. He recently completed a huge mid-term project for Geology 4200 about the Gordonville's mine complete with several pages of hand-drawn section of cores and cross-sections of mining, and prediction of where to drill cores for future mining. Pretty impressive. And a well-written paper. The entire mid-term project got an A.