I second that emotion!
lol @ the dremel tool. So is your soil more acidic? You are closer to the ocean? I'm not even sure exactly where you live, just that you are near the east coast?
Doesn't it vary in any ecosystem due to the soil types in that area? Like where deciduous plants vs coniferous plants grow, clay soil vs sandy, etc... I'd like to know more about soils and geographic effect on coins/metals... Know where to start, have you found any good info?