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Ottawa sand |
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Ottawa sand Naturally rounded grains of nearly pure quartz, produced by processing silica sand obtained from deposits near Ottawa, Ill.; used in mortar test specimens in testing hydraulic cement. Also see standard sand, graded standard sand. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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