Extent and Composition of the Incrustation on Some Filter Sands: Thesis (Classic Reprint) - Hardcover

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Excerpt from Extent and Composition of the Incrustation on Some Filter Sands<br/><br/>From the above we have been led to make an investigation to ascertain the condition of sends in the Illinois filters. We wrote to several filter plant Qperators asking for samples of sand which had been in use for some time. Five samples were received. We are indebted to Mr. C. H. Cobb, of Kankakee, Mr. H. M. Ely of Danville, Mr. W. H. Gelston of Quincy, and Mr. W. Olson of Moline for the samples and data concerning them.

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