I believe all the airfields have dumps too, however, having spent all my life surrounded by dozens of wartime airfields and been involved with airfield museums on and off in the last 30 years, I've heard load of 'eyewitness' statements of Jeeps, radial engines etc etc all brand new in crates..... Nothing, other than rubbish has been found as far as I know. Of course, yeterdays rubbish is viewed differently today but I feel the vast majority of these things will turn out to be wishful thinking.