St Marys Cement is part of international building materials supplier, Votorantim Cimentos' North American operations (VCNA). Since its founding in 1912 in St. Marys, Ontario, St Marys Cement has been producing cement to support new construction, modernizations and infrastructure improvements across the Great Lakes region of the United States and Canada, and in the Northeast U.S. and Eastern Canada. The St Marys legacy includes landmark projects such as CN Tower, Roy Thompson Hall, Maple Leaf Gardens and the Darlington Nuclear Station, as well other renown engineering, civic and residential projects that have contributed to the growth and prosperity of the region.