The structural and industrial materials of California (1906)
Aubury, Lewis E., 1862- · Sacramento, W. W. Shannon, Superintendent state printing · leaf 212
own broad-gauge railroad(Alameda and San Joaquin Railroad). The hills on either side of Corral Hollow, in the vicinity of Tesla, arestudded with prospect tunnels, ranging from 50 to 800 feet in length.Some of them were put in as early as 1863 in quest of coal. Most ofthem are caved at present. The… … (205) 206 STRUCTURAL AND INDUSTRIAL MATERIALS OF CALIFORNIA. grade pottery and fire clays. The accompanying sketch roughly showsa cross-section of the beds, which dip X. 70^ \V. at an angle of about 60°.
Building stones · Portland cement · Clay · Mines and mineral resources
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