With labor and material costs rising rapidly and the generally depressed state of the construction industry, it is good news indeed that the U. S. Bureau of Reclamation is publishing its new eighth edition of the CONCRETE MANUAL. This is the one book the concrete contractor cannot afford to be without because it incorporates all of the state of the art advances that can enable him to turn out better jobs faster and at less overall cost. To appreciate what is in the manual one must go back in time to 1938 when the first edition was published. Several factors led to its publication. Today, 90 percent of the funds appropriated for Bureau of Reclamation projects are repaid through the sale of water and power. Prior to the development of hydro power the cost of Bureau projects was borne mostly by farmers who were highly critical of what they considered unnecessary expense. These early entrepreneurs also expected the structures to last through the life of the 50 year repayment contract with little or no maintenance, and their influence stimulated Bureau interest in high concrete quality. Building of the Hoover Dam in the thirties further pointed up the need for a better understanding of the behavior of concrete and control of it in construction. Work began on the first manual while Hover Dam was under construction and a draft edition was printed in 1936 through the efforts of Denver office staffers Bryan W. Steele, head of the Concrete Dam Design Section, and Arthur Ruettgers, staff engineer. Copies of the draft were circulated to Bureau engineers in the field and to other prominent concrete engineers for critical review. The 307 page draft had grown to 454 pages when the first edition was published in 1938, reflecting comments received on the draft as well as the results of research performed in connection with the Hoover and Grand Coulee dams. There has been no set procedure for issuing new editions. When the supply on one edition is nearing depletion, it is examined to determine if there has been sufficient advancement in the knowledge of concrete and concrete material to warrant revision.