<ARTICLE> 5 <LEGEND> This schedule contains summary financial information from the Consolidated Balance Sheet at March 31, 1998 and the related Statement of Consolidated Operations for the three months ended March 31, 1998, restated to reflect the April 30, 1998 pooling of interests with Plutonic Resources Limited. </LEGEND> <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-END> MAR-31-1998 <CASH> 153,219 <SECURITIES> 120,288 <RECEIVABLES> 48,124 <ALLOWANCES> 0 <INVENTORY> 99,310 <CURRENT-ASSETS> 454,283 <PP&E> 2,380,611 <DEPRECIATION> 1,367,545 <TOTAL-ASSETS> 1,609,709 <CURRENT-LIABILITIES> 145,537 <BONDS> 377,264 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 210,623 <OTHER-SE> 459,390 <TOTAL-LIABILITY-AND-EQUITY> 1,609,709 <SALES> 200,472 <TOTAL-REVENUES> 216,217 <CGS> 171,647 <F1> <TOTAL-COSTS> 184,212 <F2> <OTHER-EXPENSES> 22,331 <F3> <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 5,112 <INCOME-PRETAX> 4,562 <INCOME-TAX> 7,220 <INCOME-CONTINUING> (6,586) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (6,586) <EPS-PRIMARY> (0.03) <EPS-DILUTED> (0.03) <FN> <F1> Includes Production costs and Depreciation, depletion and amortization from the Statement of Consolidated Operations. <F2> Includes Production costs, Depreciation, depletion and amortization and Administrative and general expense from the Statement of Consolidated Operations. <F3> Includes Exploration expense, Write-downs and other unusual charges, Business combination and integration costs and Other expense from the Statement of Consolidated Operations. </FN>