These video interviews were conducted by John Fournelle when he visited Tim Teague at UC Berkeley earlier this year.
Tim Teague, who retired from UC Berkeley this year, is one of the world's experts in petrographic sample preparation. In these videos Tim Teague and John Fournelle discuss many aspects of sample preparation, thin sectioning and various sample mounting methods and techniques.
If you've ever wondered how to get perfect polishes on a variety of materials, Tim Teague is the person who can tell you how to do it.
Links to the two videos recorded by John Fournelle are here:
https://probesoftware.com/download/Teague_010218-1.MP4
https://probesoftware.com/download/Teague_010218-2.MP4