Pardee Dam, Construction View, -- Showing battery of four, 2 yd. mixers. Plant had a capaicty of 2,100 cu. yds. of concrete in two, 8 hr. shifts. Maximum daily pour, 4,016 cu. yds.

Courtesy of UC Berkeley, Bancroft Library

http://www.oac.cdlib.org/ark:/28722/bk0012h9m39/?order=1

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UC Berkeley, Bancroft Library