there are lots of these stories about, and we know heaps of stuff saw sea dumped under the terms of lead lease, this kind of thing still goes on, (if any of you have been involved in supplying kit under UOR'S you will know what I mean) most stories are just that stories and wife's tails that get written into myth, I know of a good one that has some back up. The guys that worked on hobarts funnies. up north on a big estate, after the war all the prototypes where bulldozed into a big dip in the ground, that dip in old maps isn't there anymore apparently and the old boy was very credible, But until someone comes clean about the address it is just a fantastic story. My dad had some good stories from the 1950's he used to tell us when i was young, but ask him the same thing now and its a mix of a dozen stories! and makes no sense anymore. if these things are real, document them and pass them on.