I probably shouldn't even be posting this I am so rusty. Went out this afternoon and spoiled a nice day digging in frozen ground. LOL It was brutal. Kept hitting can slaw. I know I can uisually avoid most of it because it gives a loud sound. But since I am so rusty I dug anything I could find. I don' t know, but I noticed every time I was getting a slight amount of Iron Audio low tone on every can slaw I dug. I don't know what to make of it. Even the frozen dirt I dug up was giving some Iron Audio. Hurry up Spring before I lose it.