I hereby guarantee in writing that if the fossil fuel industry were using large amounts of Cobalt, you'd hear nothing from the deniers. Any corporate involvement will entail some exploitative aspect, probably along with a couple of CIA-backed coups for tradition's sake. The solutions are to subject corporations to better regulation and to keep looking for improved technologies and less-compromised sources of minerals. We should cut exploitative mines loose wherever an alternative is available, but our not liking a corporation's or state's repressive activities does not make global heating go away.