Annual report of the State Mineralogist for the year ending ... (1883)
California State Mining Bureau · Sacramento : California State Mining Bureau · leaf 613
sed. SAN LUIS OBISPO BITUMINOUS ROCK COMPANY. This was the pioneer company organized for the exploitation of thebituminous rock mines of San Luis Obispo, which obtained possession ofa tract of land on which were large deposits of this rock. The companyowns about one thousand acres of land there,… … my-
California State Mining Bureau · Mines and mineral resources · Gold mines and mining · Geology · Mineralogy
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