The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 289
re thirty-odd minerals used as structural and industrial materials,the possible production of which has been barely touched upon, amongthem being asbestos, barytes, bauxite, calcareous and other tufa, chrome,feldspar, fullers earth, gypsum, iron ore, marble, mineral ]3aint, onyx andtravertine,… … en Slonc. ,,i the Aiuu-x cl lluSan Francisco, Made tn S ing; deposits and surface indications are known in thirteen counties ofthe State, yet the annual production is worth but a few hundred dollars. Fifteen counties have well-known deposits of gypsum. Only fourreported production for 1911 to the…
Architecture · Building
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