by J.L. Calver, H.P. Hamlin, and R.S. Wood, 194 pages, 10 plates, 2 figures, 7 tables, 17 county maps with sample locations, 1961. This report (the first in a series of five) contains tests and determinations of properties required to evaluate potential ceramic and nonceramic uses of 111 samples of clay, shale, mudstone, slate, phyllite, and schist -- collected from 17 counties the northern part of Virginia. Done in cooperation with the U.S. Bureau of Mines, the report includes sample descriptions, characteristics, and evaluations of individual samples and county summaries. Numerous tables summarize criteria used in evaluating whiteware materials, structural clay products, pottery clays, lightweight aggregate clays, and fire clay; along with description of structural clay products and principal types of pottery.
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