. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. f yellow shale from the companys claybeds was made by J. F. Pfleuger & Company, Bremen, Germany: Loss on ignition (moisture and carbonic acid) Silica Ahmiiua Iron oxides Calcium oxides INIasnesium oxides Alkalies (balance) Trial runs have shown that a good vitrified brick for paving purposescan be made from this shale. 30i^ MINES AND MINERAL RESOURCES. In addition to the above named plants there were at one time twoothers: M
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. f yellow shale from the companys claybeds was made by J. F. Pfleuger & Company, Bremen, Germany: Loss on ignition (moisture and carbonic acid) Silica Ahmiiua Iron oxides Calcium oxides INIasnesium oxides Alkalies (balance) Trial runs have shown that a good vitrified brick for paving purposescan be made from this shale. 30i^ MINES AND MINERAL RESOURCES. In addition to the above named plants there were at one time twoothers: McKenzy & Reids pottery at Benicia, which used clay fromlone (Amador County) and from Hoyts farm near Goodyear Station;and the Union Pressed Brick and Terra Cotta Company, with six kilnsat Vallejo. These have both been abandoned for a number of years. BibL: R. VIII, p. 631; XIII, p. 619; Bull. 38, p. 258. CEMENT. Benicia Works. This property, at Benicia, owned by Jas. Clyne,has not been operated of recent years, but previous to the rise of thePortland cement industry in California was an important Photo No. 63. Orange-peel bucket excavator in quarry of Pacific Portland Cement Com-pany, Solano County. The product is a hydraulic limestone or natural cement and wasfirst put on the market in 1860. BibL: R. VIII, p. 632; IX, p. 309; XII, p. 380; XIII, p. 612;Bull. 38, p. 185; Min. Res. W. of Rocky Mts., 1868, p. 245;Geol. Surv. op Cal., Geol. Vol. I, p. 101. Pacific Portland Cement Company, Consolidated. F. G. Drum,president; F. E. Erline, secretary; home office, 832 Pacific Building,San Francisco. F. D. Wood, superintendent at the plant. This plantat Cement, northeast of Fairfield, is in two units, as will be noted fromthe photograph (No. 62), the new one being on the right, with capaci-ties of 2500 barrels and 3500 barrels per day respectively. The older COUNTY, 303 plant began operations in 1900, and was enlarged in 1903 and 1905,while the new plant has been pro
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