Article: A brief history of gypsum board in North America: modern gypsum board has as its predecessor a product called "Sackett Board," a composite material that was made of layers of thin plaster placed between four plies of wool felt paper. This board was patented in 1894 by Augustine.(all things GYPSUM)

Sackett, the man generally considered the grandfather of the gypsum board manufacturing industry.

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Prior to 1894, gypsum had been used for thousands of years as a building material and as an architectural detailing element. The first evidence of the use of gypsum in building construction appears to have occurred in 3700 B.C., when the Egyptians used gypsum blocks and plaster applied over woven straw lath in the building of the pyramid of Choeps. As a testimony to the strength and durability of gypsum, some of this construction, including walls decorated with murals composed of tinted plaster, is ...

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