Canada: Saint-Gobain subsidiary CertainTeed Canada expects to extract 1.5Mt/yr of natural gypsum and anhydrite from its upcoming Antrim gypsum quarry in Lake Egmont, Nova Scotia, after it enters operation in 2027. Local press has reported that the project secured industrial approval earlier in May 2026. Gypsum extracted at the mine will travel 80km by road to the port of Sheet Harbour, for shipping to the company's Mississauga (Ontario) and Sainte-Catherine (Quebec) gypsum wallboard plants, as well as to other Saint-Gobain gypsum wallboard plants in the US. It will have a 20-year working lifespan.
Saint-Gobain North America said "The Antrim mine is a strategic location to supply our northeastern North American manufacturing facilities with high-quality raw materials.”
CertainTeed Canada’s Antrim mine to open in 2027
