David, the soil there is loose sand, no clay or anything, so anything found nowadays is beyond using I would say, have various parts that came from there 20 years ago, mostly motorcycle blackout masks etc. and they were only just salvageable, but also not from Deelen, but Oosterbeek, a part for a 75mm Pack Howitzer, that a friend dug up, and is cast steel, and very usable!! is on one of my Pack Howitzers right now!
PS, better not talk about the environmental issues, someone might want to clean it all up, but the costs would not be justifyable.....
Cheers,
Lex