State-owned Nalco is open to venturing into mining of rare earth elements (REEs) with its bid advisor conducting due diligence on domestic auctions for REEs, magnesium and chromite blocks, its CMD Brijendra Pratap Singh Monday said. The move signals National Aluminium Company Ltd's (Nalco) diversification strategy beyond bauxite and alumina, targeting high-value critical minerals essential for electronics, defence, renewables and electric vehicles.