Versions of s. 59(3.3)(c)

33 1/3% of the total of all amounts, each of which is an amount in respect of a disposition of depreciable property of a prescribed class that is bituminous sands equipment (other than a disposition of such property that had been used by the taxpayer to any person with whom the taxpayer was not dealing at arm’s length) of the taxpayer after December 11, 1979 and before 1990 and in the year, the capital cost of which was added in computing the supplementary depletion base of the taxpayer or of a person with whom the taxpayer was not dealing at arm’s length or in computing the supplementary depletion base of a predecessor where the taxpayer is a successor corporation to the predecessor, that is equal to the lesser of