Saudi National Gypsum 2Q 09 Net Pft -26% At SAR24 Million. ... The company, which makes plaster boards and agricultural gypsum products, said six month net profit fell 13% to SAR52.91 million, ...

VARIATIONS within the normal range of temperature do not exert a very profound effect upon the rate of hydration of gypsum plaster1,2. For example, Fig. 1 shows the maximum rate of increase of ...