(b) the production in Canada ofi. petroleum, natural gas or related hydrocarbons from a natural accumulation of petroleum or natural gas in Canada other than a mineral resource or from an oil or gas well in Canada;
i.1. sulphur from a natural accumulation of petroleum or natural gas situated in Canada, from an oil or gas well situated in Canada or from a mineral resource situated in Canada;
ii. metal, minerals other than iron, petroleum or other related hydrocarbons, or coal from a mineral resource in Canada to any stage that is not beyond the prime metal stage or its equivalent;
iii. iron from a mineral resource in Canada to any stage that is not beyond the pellet stage or its equivalent;
iv. petroleum or related hydrocarbons from a deposit of bituminous sands or oil shales in Canada to any stage that is not beyond the crude oil stage or its equivalent.