I've been one of the people responsible for picking the place clean
but I'd bet that there may have been someone picking it clean before I started hunting there. I've also hunted the old Plainfield High School located on route 12 and NEVER got ANYTHING silver out of there, nor did it give up much clad. As old high schools go I had my best luck hunting Norwich Free Academy back in the early to mid 1980's.......more than 30 silver coins including an 1893 Barber Quarter. Unfortunately the city of Norwich banned metal detecting about 25 years ago or so because one of the town's coin dealers got caught hunting the historical Norwichtown green and that angered the "powers that be" to the point they banned detecting everywhere within the city limits.