Concluding Nova Scotia (although I will add some photos shortly):
http://www.groceteria.com/place/canada- ... k/moncton/
According to this post on a local FB group, all 4 Mountain Way stores shut down in 1982, and the store on Acadie Ave in Dieppe later became a No Frills. No dates on it though.
https://www.facebook.com/groups/vintage ... 112468335/
https://www.facebook.com/groups/vintage ... 112468335/