The announcement comes as the company is laying off about 50 workers in Lynchburg, Virginia, a bit more than half the jobs it has cut in the US as of late.
Company is said to have sent out requests to investment banks as it seeks to hire an adviser to assist in the bidding process for Anglo American's niobium and phosphate business in Brazil.
The best way to make money as a mining investor is by owning a company that has exploration success, or being on the right side of commodity price moves.
Major commodity-producing countries are set to remain under intense finance strain in 2016, which will increase the risk of social unrest, says Verisk Maplecroft.
Only 0.6% of private capital raised in 2015 for natural resource investment is for mining projects–one wind farm fund attracted more than the entire sector.