Cleveland-Cliffs (CLF) shares closed more than 20% higher today after the NYSE-listed company signalled a potential expansion into rare earth mining. CLF is already exploring its existing mines in Michigan and Minnesota that show promising signs of rare-earth deposits according to a press release on Monday. More News from Barchart Including today’s rally, Cleveland-Cliffs stock is up more than 170% versus its year-to-date low. www.barchart.com Significance of Potential Rare Earth Expansion for CLF Sha ...