Thanks for the info and history. Very interesting. Were these dumped on purpose or randomly lost? I read a story not long ago that the Swiss at one time (maybe '50s or '60s) dumped old ammunition in a couple of its beautiful alpine lakes. Some of the old pictures show barges full of crates of ammo and grenades with soldiers simply tossing them over the side. They now pose a hazard, environmental or explosion or both, and they are debating how to clean up.