the old fair grounds here ran from 1895 to 1930s then a cattle lot for 10 years then a rodeo ground till turned into baseball diamonds about 15 years ago. still lots of area that is not ball field. but the junk is hard to deal with. so far I have found a few Wheaties, car parts hunks of iron, razor blades, and the pull tabs and can slaw are so thick its almost impossible to find a place to balance your detector. does anyone have any secrets or systems to working such a area.