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This writer works through some upper limits of vehicle electrification, based on cobalt reserves: https://syonyk.blogspot.com/2015/12/cobalt-requirements-for-g

• tim333 7y ago
  The writer doesn't seem to distinguish between reserves and resources, a common mistake in these kinds of articles. In normal mining use reserves are areas of ore you've mapped out and shown to be economically extractable by drilling holes, taking samples etc, resources are the amount or stuff out there. Reserves always only go a few years ahead because it takes money to find them, drill them and so on. That doesn't mean we're running out.