* C: Frank Wigglesworth Clarke of USGS and Henry Stephens Washington
</references>
* U: United States Geological Survey (USGS)
</references>
* B: 
</references>
* F: Alexander Fersman
</references>
* G: Victor Goldschmidt
</references>
* M: Brian Mason
</references>
* K: 
</references>
* H: Research on the history of chemistry
</references>