Although there is likely some EV-related are rare earth exploration going on, the real king in the 'porcupine camp' is still gold. While Kidd Creek is on the backside of its reserves, there is still some base metal activity going on. One real recent surprise is the a large nickel deposit being proven near Kidd Creek. All spec at this stage of course but it being touted as potentially the second largest nickel deposit in the world.
It's been few years but the last time I rode into Timmins, I was stopped behind a Ferrari and thought that was rather indicative (of money, not necessarily good sense). One advantage existing communities have in the north is that new mines no longer create new townsites; the government won't allow it. Most development work now is contractors. That and creative shifts for operations mean that workers and their families along with support industries can locate in towns with services.
We recently moved to North Bay and I was surprised at the size of East Indian population here. Some are saying it is because of the university and college but I'm not convinced that is all of it.