Clay
Added 2022-07-21 14:02:00 +0000 UTCPart I; Clay is a type of fine-grained natural soil material containing clay minerals. Clays develop plasticity when wet, due to a molecular film of water surrounding the clay particles, but become hard, brittle and non–plastic upon drying
Part II; Clay is the oldest known ceramic material. Prehistoric humans discovered the useful properties of clay and used it for making pottery. Some of the earliest pottery shards have been dated to around 14,000 BC, and clay tablets were the first known writing medium.
Part III; Claybank Brik Plant: (located in Saskatchewan) The Claybank Plant produced a distinctive brick that was used in many prominent buildings across Canada including the Château Frontenac in Quebec City, the Delta Bessborough in Saskatoon, the Gravelbourg Cathedral, in Gravelbourg and many courthouses and public buildings throughout Saskatchewan. The face brick was produced until the 1960s before being discontinued.
