When Natascha Viljoen takes the helm of Anglo American Platinum in April, she will find a “fierce crocodile” in her in-tray. In the local Tswana language, that’s Mogalakwena, the largest palladium mine outside Russia. The metal’s surge to a fresh record is turbo-charging the giant openpit’s cash-generating powers, and the new chief executive officer, announced on Thursday, must decide whether to expand further.