
https://weekly.blog.gustavus.edu/2014/09/11/the-true-cost-of-the-assembly-line/

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

https://www.imf.org/~/media/Files/Publications/WEO/2018/October/English/c2.ashx?la=en