Gypsum may be an unfamiliar name to many but we are surrounded by it every day. It is a mineral used to make types of plaster which coat our homes, schools and offices - and in Cumbria sits the ...

Not only is it a waste, it's also a pain to clean out ... flavorings, and water. Plaster of Paris and gypsum both contain calcium sulfate. When the two are mixed, the reaction between the acid ...