Went back on my lunch break to hammered site near work. Found this I think is copper cylinder. Thought it was just a piece of pipe but think it's something else. It has faint letters on it. Can't see from pic. Has an F and 2 lines at top . I've cleaned it best I could. I just think it's more than a piece of pipe . It's kind of heavy . I know y'all are tired of me posting all the time for IDs but I'm still learning as I go .