Page 237 - miningincalif1927

SAN FRANCISCO FIELD DIVISION. 205

('lav from a bank at the base of the hills near Goodyear station was

utilized about 20 years ago in a Benicia pottery, since abandoned.
Although there does not appear to be deposits of high-grade clay of
special commercial value in the county, there is apparently an abundant
supply of the more common clays adaptable to the manufacture of

brick and tile.
Bibl: State Mineralogist's Report VIII, p. 631; XIII, p. 619;
XIV, p. 300; XVII, p. 242. State Mining Bureau Bull. 38,

p. 258, Prel. Rep. No. 7.

CEMENT.

Portland cement has been the leading mineral product of Solano

County for the last 25 years. The Pacific Portland Cement Company,
which was organized in May, 1901, completed their first mill of 1600

Steiger Brick and Tile Company's Plant, Solano County. Idle.

barrels daily capacity at Cement in this county in 1902. The original
plant has been rebuilt and expanded at intervals, the present mill
having a capacity of 4200 barrels per day.

Pacific Portland Cement Company. Head office, Pacific Building,

San Francisco. Robt. B. Henderson, president; J. H. Colton, vice
president, in charge of operations.
This company now has three cement plants and two plaster mills,
together with extensive deposits of limestone, gypsum, clay and other
raw materials required in the manufacture of its products which are

known by the trade names of Golden Gate and Old Mission brands of
cement and Empire brand plaster. The cement plants are located at
Cement, Solano County; Redwood City, San Mateo County, and San
Juan, San Benito County (formerly Old Mission Portland Cement Co.).
The gypsum mills are at Plaster City, Imperial County, Cal., and
Gerlach, Nevada.
The Solano County cement mill is situated in the town of Cement,

which is connected with the main line of the Southern Pacific railroad