Assertion: gypsum's product | /r/HasProperty | paper
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text: Developed from Sackett Board, an earlier product that used gypsum in combination with wool felt paper, the early 1900s saw paper-encased boards become more and more commonly used in construction throughout the country.11 More efficient production methods, quicker installation times and increased fire resistance were key elements in decisions to use gypsum boards to rapidly build army barracks during the First World War.