material the half-completed dwelling pic- factories, and workshops built of concrete, which tured in one of our illustrations is built; and yet for all the world look like masonry. By far the the entire building was erected with concrete greater number of these structures have been blocks molded in… … CONCRETE HOUSE BUILDING. sible. In its construction and operation, this machine ton, D. C. The result has been the introduction of a construction that the machine which forms the essen- new type of dwelling very much cheaper than the ordi- tial element is so designed that blocks of any desired is…
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