The structural and industrial materials of California (1906)
Aubury, Lewis E., 1862- · Sacramento, W. W. Shannon, Superintendent state printing · leaf 216
^^ -f ,y^ kf^^^%-l … ILL. No. 95. CLAY PIT OF THE STEIGER TERRA COTTA AND POTTERY COMPANY, AT CARBONDALE, AMADOR COUNTY.14—BUL. 38 (209) 210 STRUCTURAL AND INDUSTRIAL MATERIALS OF CALIFORNIA. is or was overlaid l)y a heavy bed of auriferous red gravel, which, overa large area along the brow of the hill, was removed by…
Building stones · Portland cement · Clay · Mines and mineral resources
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