1. Summary of Significant Accounting Policies PRINCIPLES OF CONSOLIDATION The consolidated financial statements include the accounts of the Company and its subsidiary companies. The operations of the subsidiaries are included in the accounts from the date of acquisition. The oil and gas exploration and production is conducted under joint venture agreements and the Company’s proportionate interest in the assets and liabilities and revenues and expenses of joint ventures is included in the accounts. The active subsidiaries, which are wholly-owned, are as follows: Brinco Mining Limited Brinco Oil & Gas Limited MINERAL EXPLORATION Exploration expenditures and costs related to the investigation of possible investments in mineral resource properties are charged to earnings as incurred, net of recoveries from joint venture partners. PROPERTY, PLANT AND EQUIPMENT Mineral Resource Properties Development and preproduction expenditures on mineral resource properties, net of recoveries from joint venture partners, are capitalized providing the properties are considered to be of value to the Company. When a property achieves commercial production volumes, costs are charged to earnings using the unit-of-production method based on proven reserves. In the event of abandonment or disposal of such properties, the resulting loss is charged to earnings. Oil and Gas Properties Expenditures on oil and gas properties are accounted for using the full cost method whereby all costs relating to the exploration for and development of oil and gas reserves are capitalized. The costs of such properties are charged to earnings using the unit-of-production method based on proven reserves. Plant and Equipment Depreciation of oil and gas plant and equipment is charged to earnings using the unit-of-production method based on proven reserves. Mine plant and equipment is charged to earnings over its physical or economic life using the unit-of-production and straight-line methods of depreciation. INVENTORIES AND MINE SUPPLIES Asbestos fibre and ore stockpiled are valued at the lower of cost, determined on a first-in, first-out basis, and net realizable value. Supplies are valued at the lower of cost, principally average cost, and replacement cost. TRANSLATION OF FOREIGN CURRENCIES Current monetary assets and liabilities arising in foreign currencies are translated into Canadian dollars at the rate of exchange in effect at the end of the year and revenue and expense items are translated at the average rate of exchange for the year. Gains and losses on currency translations are included in the determination of earnings.