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STATE GEOLOGIST. 153 
any one who might accidentally fall. The proportions of concrete used 
in the inner shell were of I part cement, 2 sand and 4 stone; in the 
outer shell, 1 part cement, 2 sand and 6 stone. 
There are four or five other large concrete chimneys in this country: 
One at South Bend, Ind., one for the Algonquin Hotel in Dayton, Ohio, 
and two in New Jersey, one of which, at the Pacific Coast Borax Com- 
pany’s plant, is 150 feet high and 7 feet inside diameter; the other, at the 
Central Lard Company’s plant, is 108 feet high and 8 feet inside diameter. 
TANKS, SILOS AND ELEVATORS. 
Steel concrete has been used for gas-holder tanks, coal bins, lime 
bins, cement storage bins, water towers, grain elevators, silos, etc. As 
EE: 
Fig. 90.—The Tallest Concrete Chimney in the United States (in Process 
of Construction), the Pacific Electric Railway, Los Angeles, Cal. 
