Canadian Gypsum Company, Limited v. Minister of National Revenue, [1965] CTC 210, 65 DTC 5125 -- text
DUMOULIN, J.:—Canadian Gypsum Company, Ltd., of the City of Toronto, Province of Ontario, a company incorporated under the laws of Canada, has uninterruptedly operated mines in Canada for about 40 years. Its objects are, in part, to use and develop lands