Mineral Resources (ASX:MIN) has reportedly started work on a “Plan B” succession plan that would see a new leader take the helm at the under-investigation Western Australian miner at the same time as several directors stepping down. This secondary battle plan was put in motion last week, The Australian reports, should internal investigations point to a fresh start being the best course of action. MinRes has been at panic stations for a week as it looks to answer ASX inquiries regarding managing director Chris Ellison and his admissions about a tax evasion scheme. Question marks have hung over …