MISSISSAUGA, Ont. — Castle Building Centres’ newest member is North Dundas Building Supplies. Located midway between Ottawa and Morrisburg, it will service the lumber and building material needs of the surrounding communities, including Chesterville and Winchester. New owners David Nyentap and Stacy Duguay from Russell, Ont., recently purchased this former lumberyard location and intend to return it to its original retail roots, adding a new storefront design. Duguay will oversee management of the retail location and the store is planning on an official Castle Grand Opening in early Summer.