Essentials in Cement Hollow Block Manufacture
Ernest B. McCready
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So much has been said and written concerning concrete blocks that it seems like thankless repetition, almost to touch upon the subject at all. And yet, in spite of all the full and explicit instructions in the literature, and all the warnings that have been sounded, notwithstanding the specifications which have been forumulated, we, whose business it is to test and inspect materials and determine the sources of trouble and reasons for failure, know that the same mistakes are being repeated dat after day and year after year. This is in part due to the rapid growth of the business and the enlistment of new and inexperienced forces; but even more than this is responsible. The universal desire for the greatest gain with the smallest outlay.