Full text
the Canadian exploration and development expenses incurred by the original owner before the original owner disposed of the particular property to the extent that those expenses were not otherwise deducted in computing the income of the successor for the year, were not deducted in computing the income of the successor for a preceding taxation year and were not deductible under subsection 66(1) or deducted under subsection 66(2) or 66(3) by the original owner, or deducted by any predecessor owner of the particular property, in computing income for any taxation year, and