The structural and industrial materials of California (1906)
Aubury, Lewis E., b. 1862 · Sacramento, W.W. Shannon, Superintendent State printing · leaf 208
two classes of fire clays: the soft or plastic, and the hard orflint. The latter occurs in hard rock masses, which do not slake inwater, and are not plastic in their natural condition. They are fre-quently more refractory than the plastic clays. Fire clays are used formaking firebricks, stove and… … < o z Z z (201) 202 STRUCTURAL AND INDUSTRIAL MATERIALS OF CALIFORNIA. HIGH-GRADE CLAYS AND CLAY INDUSTRIES IN CALIFORNIA. ALAMEDA COUNTY. California Pottery and Terra Cotta Company.—S. W. Winsor is pro-prietor of these works, wliich are at the corner of East Twelfth street andPark avenue, at…
Building stones · Portland cement · Clay · Mines and mineral resources
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