360R79. A taxpayer who operates in Canada a mine for the production of materials from a mineral resource in Canada may deduct, in computing the taxpayer’s income for a taxation year, an amount not exceeding 25% of the aggregate of all expenditures made or incurred by the taxpayer before 1972 that may reasonably be regarded as being attributable to the prospecting and exploration for and the development of the mine prior to the mine coming into production in reasonable commercial quantities.
s. 360R43; O.C. 1981-80, s. 360R43; R.R.Q., 1981, c. I-3, r. 1, s. 360R43; O.C. 134-2009, s. 1.