Uses

The review M. Filella (2017) Tantalum in the environment. Earth-Science Reviews 173, 122-140 contains a section on tantalum uses.

Information can also be found in: Gunn, G. (Ed.), 2014. Critical Metals Handbook. American Geophysical Union and Wiley. Nottingham, UK, chapter 15.

An essential source concerning production and uses: USGS.