Canada will spend some $1.6 billion (C$2 billion) on building a battery mineral supply chain, Reuters has reported, citing two sources from the federal government in Ottawa. Nickel, lithium, cobalt, and magnesium will be at the heart of the plan, which would involve a boost in both production and processing of these metals and minerals, the sources said. The plan, likely to be unveiled with this year's budget on Thursday, is the latest signal that North American economies are waking up to the crucial nature of the mineral supply issue for the energy…