97828716
Mar 8, 2023
rare earth elements and rare earth oxides recovered from coal bed underclays and coal residues, namely, praseodymium, neodymium, gadolinium, terbium, dysprosium, yttrium, scandium and their oxides, in addition to lithium carbonate and alumina
Chemicalsrecovery of rare earth elements, namely, mining and processing for rare earth elements and their oxides, in addition to lithium carbonate and alumina from coal bed underclays and coal residues
Building Construction and Repair