I have another question.
The DFO manual of regulations and guidelines for dumping waste material from an open-pit mine says that the safest place to dump waste materials is in a natural lake body. Many people would be surprised to hear that. But in fact, because of the shape of it, it's best for protecting the waste from spillage.
Do you know of any mines opened in Quebec, say in the last 10 years, that use a natural lake body for dumping their waste materials?