That would be gypsum, the name given to the soft mineral — a combination of calcium sulfate and water — that has been excavated and mined in Kansas since the 1860s.

Lightweight gypsum board systems permitted the use of lightweight steel in steel framed buildings, which enabled the widespread growth of high-rise residential and commercial construction during ...

Plaster accents around light fixtures and crown moldings are the details that can create a wow-factor on walls and ceilings. The use of lime plaster can be documented to as early as 7500 B.C.