The problem goes back to 1950, when the practice began. Unfortunately, the dump was shameless and unregulated. People at the time didn't seem angered by such practices; they simply tolerated them.
Luckily, since the 1980s, the public has become much more aware of the practices and voiced strong opposition. The Department of National Defence no longer permits the firing of projectiles into the lake. It still goes on in the Nicolet sector, but they are fired into mounds of earth.
The problem we have now is that it's impossible to verify exactly how many potentially dangerous shells are in the lake. Everyone recalls the accidents that occurred a few years ago. Fixing the problem is going to take time, and unfortunately, it will have an impact on the environment.