Forest National Park and Potash, Arizona
Earth Notes: Potash and the Petrified Forest
KNAU Arizona Public Radio, October 16, 2013
http://knau.org/post/earth-notes-potash-and-petrified-forest
Potash in the park: Miners survey deposits
around Petrified Forest, Arizona Daily Sun
http://azdailysun.com/news/local/potash-in-the-park-miners-survey-deposits-around-petrified-forest/article_57123aa8-07cc-11e3-99f1-001a4bcf887a.html
Major Potash Deposit Near Holbrook, Arizona.
Arizona Geological Survey, 2011
http://www.azgs.az.gov/minerals_potash.shtml
http://www.holbrookbasin.org/potash_deposit.htm
Yours,
Paul H.
