Editing Gypsum (section)

===Construction industry===
*[[Drywall|Gypsum board]]<ref>*[http://www.csinet.org/s_csi/docs/9400/9361.pdf Complimentary list of MasterFormat 2004 Edition numbers and titles] (large PDF document)</ref> is primarily used as a finish for walls and ceilings, and is known in construction as plasterboard, "sheetrock", or drywall. Gypsum provides a degree of fire-resistance to these materials, and glass fibers are added to their composition to accentuate this effect. Gypsum has negligible heat conductivity, giving its plaster some insulative properties.<ref name="Bonewitz-2008">{{Cite book |last=Bonewitz |first=Ronald |title=Rock and Gem: The Definitive Guide to Rocks, Minerals, Gems, and Fossils |publisher=DK |year=2008 |location=United States |pages=47 |language=English}}</ref>
*[[Gypsum block]]s are used like concrete blocks in construction.
*[[Gypsum mortar]] is an ancient mortar used in construction.
*A component of [[Portland cement]] used to prevent flash setting (too rapid hardening) of [[concrete]].
*A wood substitute in the ancient world: For example, when wood became scarce due to deforestation on [[Bronze Age]] [[Crete]], gypsum was employed in building construction at locations where wood was previously used.<ref>{{cite journal| first= C. Michael |last= Hogan| url= http://www.themodernantiquarian.com/site/10854/knossos.html#fieldnotes |title= Knossos fieldnotes| journal= Modern Antiquarian | year= 2007}}</ref>