Jpotter, thanks for the info. I choose not to dig the 12 inch deep ones because as you said it can be pretty messy. You are right that it usually shows size E. I have been tempted just to see what it is and I realize that most pipes that contain electricity or water or even gas are usually deeper than that but you never know if someone tried to hook up something themselves and did not go deep enough.
there's another thing remember when it shows at 12 inches it could be deeper than that, it could even be a storm drain cover at 3 feet, but showing size E at 12 inches
One of these days when I am on a site where I can feel comfortable digging that deep, I will and let you know what it is.
please because my experience with finding out what it was at 12 inches always turned out to be pipes
For now, last weekend while scanning an old park, I pulled up an old skeleton key and 1 1914 wheaty.
give me Wheat Cent anyday, I'm not lucky enough to find silver coins (just 3 in my detecting career)...maybe one day....remember when you find Wheats there might be silver there
I love detecting because you never know what you are going to dig up.
that's the fun of it, that's why I do it