Industrial mineral site no. 297, known as "Ringo" is a site in Whitman County, Washington. This site has been associated with refractory clays and shales. A notation found in DGER Bulletin 37 on page 27 says "Clay, probably refractory, ex-posed in pit 100 by 200 ft", and designates the value as "Quantity and quality unknown".
U.S. Department of the Interior
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U.S. Geological Survey
