The department is now turning to academics and industry workers as it looks at how to carry out "environmentally friendly and safe recovery of deep lake ammunition" — which carries a risk of explosion and could also lead to pollution in the lakes.
Yea, seems to me the risk of removing is greater than leaving them be.
They're at the bottom of a lake. When you consider what's required to deal with that environment, and every phase of removal, I'm skeptical "the juice is worth the squeeze".
No mention of analysis performed to assess leaving it alone, or the origin of this request (why is it now a concern? What changed?)
It's a minimum of 150m/450ft deep. Has any of it exploded, ever? Given the types of munitions, what's the likelihood of that happening.
Also, BI, what a crappy "news" source - they never have any detail.
Offer a reality show competition where people dive to the bottom and stick metal poles into the mud. Winner gets to be Switzerland's entry into Eurovision Song Contest.
Just pay a reward for any ammunition found in the lakes and turned into local authorities. Divers from all over will flock to the lakes. Good for tourism too.