Lately I've given up on the local parks and have been hunting the elementary school that my kids attend(built 1913). With one major exception, I find the school to be less trashy than the parks. At this school I've found my first buffalo, first gold, and first silver. The major trash exception is the metal eraser end of pencils. We all know the G2 is a nickel magnet. If I get a signal that jumps from 56-60 it's almost always a nickel. But if that same signal goes as high as 61- 62, it's almost always a pencil end, so I've quit digging those. Am I missing something good, or is this what you call learning your detector.