
https://www.usgs.gov/centers/national-minerals-information-center/rare-earths-statistics-and-information

https://www.nuffieldtrust.org.uk/files/2020-03/achieving-scale-and-spread-report-final.pdf

https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20058en.pdf