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<br />! <br />f <br />r <br />! <br /> <br />f <br />\ <br />t <br />, <br />:~ <br />. C'J <br />. ... <br />C'J <br /> <br />c <br /> <br /> <br /> <br />e <br /> <br /> <br />~ <br />g <br />~ <br /> <br />\,as\Je~as <br /> <br />~ <br /> <br />~ <br /> <br />.... <br /> <br />~ ~ <br />"- <br />, <br />\ <br />, <br />\ <br />, <br />\ <br />, <br /> <br />t <br /> <br /> <br />e <br /> <br />ou <br /> <br /> <br />mllllll <br /> <br /> <br />~. <br /> <br />I <br /> <br /> <br /> <br /> <br />er <br /> <br />am <br /> <br />Volume Five <br /> <br />ola series 01 booklelo on the Colorado <br />River and the building 01 the Boulder <br />Dam. It contains descriptions 01 the <br />Himi. concrete plant; olth. cement <br />blending and handling equipment; <br />and 01 the huge trailer lor hauling pen- <br />stock pipe. It tells how Government <br />engineers and surveyers conducted <br />exacting, perilous work; and, finally I <br />how the power plant will ~pp.ar when <br />completely equipped. <br /> <br />~ <br /> <br />t:=:l <br /> <br />~ <br /> <br /> <br />~"I"mllllmmlllmmllllll"'''''''''''''I'''IIIID''''IIIIIIII11I11''''11111111II1 <br /> <br /> <br />I <br />