US: The United States Geological Survey’s (USGS) Gypsum in the First Quarter 2021 report has shown a 2% year-on-year increase in sales of gypsum-based board products to 624Mm2 in the first quarter of 2021 from 609Mm2 in the same period in 2020. Calcined gypsum used by board producers rose by 3% to 5.6Mt from 5.5Mt. Natural gypsum production fell by 4% year-on-year to 5.0Mt from 5.2Mt, synthetic gypsum production remained level at 3.6Mt and gypsum imports rose by 14% to 1.6Mt from 1.4Mt.