; 9 By adding powdered copper to concrete, experim enter s at the Mellon Institute for Industrial Research, in Pittsburgh (U.S.A.), have produced a new building material vof unusual ■strength and resistance to wear. It is reported to be particularly usefuJ for providing non-skitl floor surfaces. During one test, coatings of the new material, from one-eighth to oue-fourth of an inch thick, were spread over a | smooth concrete walk It adhered perfectly to tbe concrete below it and, after seven months of eonstant wet'ting and after more than 250,000 people had walked over it, remained in perfect condition Tbe new material ean be mixed i for trowellfng, brushing, or spraying, [ and is suitablc ft) r stucoo and for coatjing » wido varicty of matorials.
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Hawke's Bay Herald-Tribune, Issue 171, 6 August 1937, Page 9
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122Page 9 Advertisements Column 5 Hawke's Bay Herald-Tribune, Issue 171, 6 August 1937, Page 9
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