The structural and industrial materials of California (1906)
Aubury, Lewis E., 1862- · Sacramento, W. W. Shannon, Superintendent state printing · leaf 292
hrough the mass. The better grades of the gypsum now being quarried, it is stated, runover 80 per cent in calcium sulphate. The workable beds vary in thick-ness from 2 to 30 feet or more. The present quarry (July, 1904) con-tains from 4 to 5 feet of commercial product, with almost no stripping.All… … ILL. x\o. 122. GYPSUM QUARRY OF THE ALPIXE PLASTER COMPANY AT PALMDALE,LOS ANGELES COUNTY. Light bands are gypsum. of plaster—No. 1, white for finishing; and No. 2, wall plaster. Theproduct is principally used in Los Angeles and Pasadena, and thedemand is stated to be steadily increasing. There are…
Building stones · Portland cement · Clay · Mines and mineral resources
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