Mount Weld contains one of the largest and highest grade known deposits of rare earths. The deposit is additionally unusual because it contains very low levels of thorium, a radioactive contaminant commonly found together with rare-earth elements. The combination of large resource, high grades and low thorium contamination make it a particularly attractive commercial proposition. The ore produced at Mount Weld is concentrated onsite and is intended to then be shipped to the Lynas Advanced Materials Plant (LAMP) in Malaysia for refining.