Assertion: gypsum's product | /r/HasProperty | gypsum
Facets:
Source sentences:
text: Water 7% Other <2% Product 3: Gypsum, Quartz, Cellulose Product 4:
text: The areas first commercial gypsum operation began in 1841 when Daniel Ball and Warren Granger built a mill on Plaster Creek and turned out 40 tons of product (gypsum) in a single week.