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Nitrate deposits in eastern Oregon

Image Description: “The alkali lakes in the interior part of the state are rich in nitrate, potash and soda. Extensive development of these resources now is in progress. The men shown in this picture are taking samples for chemical analysis. Other minerals know to be present in Oregon in commercial quantities are: limestone, marble, building stone, granite, basalt, coal, clay, sand, and gravel.”

 

Original Collection: Visual Instruction Department Lantern Slides

 

Item Number: P217:set 007 033

 

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Uploaded on September 2, 2009
Taken on July 9, 2009