WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE. EXHIBIT NO. 27: FINANCIAL DATA SCHEDULE Article 5 This schedule contains summary financial information extracted from the Form 10-Q of Alcan Aluminium Limited for the quarter ended 31 March 1999 and is qualified in its entirety by reference to such financial statements. Multiplier 1,000,000 Period-Type 3-Mos. Fiscal-Year-End Dec-31-1999 Period-Start Jan-01-1999 Period-End March-31-1999 Cash 623 Securities 0 Receivables 1,431 Allowances 0 Inventory 1,275 Current-Assets 3,329 PP&E 12,127 Depreciation 6,391 Total-Assets 9,601 Current-Liabilities 1,446 Bonds 1,499 Preferred-Mandatory 0 Preferred 160 Common 1,207 Other-SE 3,869 Total-Liability-and-Equity 9,601 Sales 1,822 Total-Revenues 1,841 CGS 1,468 Total-Costs 1,468 Other-Expenses 118 Loss-Provision 0 Interest-Expense 22 Income-Pretax 76 Income-Tax 34 Income-Continuing 38 Discontinued 0 Extraordinary 0 Changes 0 Net-Income 38 EPS-Primary 0.16 EPS-Diluted 0.16 18