Minerals and National Gypsum

Minerals and National Gypsum

This Classic Indiana Expeditions segment originally aired in Indiana Expeditions #202 (2009). To see more Indiana Expeditions segments visit the WFYI website: http://www.wfyi.org/IndianaExpeditions/


  1. Chaz Jiles on October 21, 2022 at 6:00 am

    GypSUM…not GypSIN

  2. Eli Patt on October 21, 2022 at 6:28 am

    people at school watching this, come watch some call of duty here!

  3. SBRINKERHOFF on October 21, 2022 at 6:40 am

    Isn’t this harmful to humans

Leave a Comment