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<br />0:::7 <br />cr. <br />~ <br />t',: <br /> <br />c <br /> <br />UNITED STATES <br />DEPARTMENT OF THE INTERIOR <br /> <br />Oscar L. Chapman, Secretary <br /> <br />BUREAU OF RECLAMATION <br /> <br />Michael W. Straus, Commissioner <br />Leslie N. McClellan, Chief Engineer <br /> <br />BOULDER CANYON PROJECT <br />FINAL REPORTS <br /> <br />PART Vll-CEMENT AND CONCRETE INVESTIGATIONS <br /> <br />Bulletin 3 <br /> <br />COOLING OF CONCRETE DAMS <br /> <br /> <br />DENVER, COLORAOO <br /> <br />1949 <br />