Zimbabwe’s government is banking on a platinum-mining boom to help revive its collapsing economy. The world’s biggest platinum companies say it isn’t going to happen. Since Emmerson Mnangagwa took over as leader of the country following a coup in late 2017, platinum projects valued at more than $8-billion have been announced by Cypriot and Russian investors. Still, two decades of political and economic instability and a government with a track record of seizing privately owned assets makes many in the industry skeptical about the new ventures.