Portland cement must be so fine that more than three-fourth of it will pass through a sieve of 40,000 holes per square inch—a sieve so fine that it hold* water.
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Bibliographic details
Auckland Star, Volume LIX, Issue 79, 3 April 1928, Page 10
Word Count
30Untitled Auckland Star, Volume LIX, Issue 79, 3 April 1928, Page 10
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Acknowledgements
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