Searching the site of an old opra house has yielded the end of a flourscent bulb, a couple stainless steel screws, four old nails, a couple odd parts, and two pennies the oldest being 1966 oh well thats why im called scrap iron lol
I love hunting vacant lots, all of which previously held a home or business. They are always start out being littered with junk. So I have to work them time and time again. Eventually, they start coughing up the goods. Keep at it. It sounds like a good site.