“Safety First” a new report by Earthworks and MiningWatch Canada recommends that all new mine tailing ponds be constructed using filtered tailings storage, otherwise known as dry-stack tailings. When filtered tailings are not an option, at the very least better dam construction needs to be required by regulators, Safety First states. The reports notes the elephant in the room still remains: should the B.C. government allow the development of new tailings dams upstream of communities and should those that currently exist be closed down?”
https://biv.com/article/2020/08/lessons-learned-mount-polley-disaster