<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS INCLUDED IN THE ECHO BAY MINES LTD FORM 10Q
FOR THE QUARTER ENDED JUNE 30, 2000. AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 10,954
<SECURITIES> 1,992
<RECEIVABLES> 3,189
<ALLOWANCES> 0
<INVENTORY> 48,427
<CURRENT-ASSETS> 78,604
<PP&E> 973,278
<DEPRECIATION> 745,244
<TOTAL-ASSETS> 329,825
<CURRENT-LIABILITIES> 57,411
<BONDS> 0
0
0
<COMMON> 713,343
<OTHER-SE> (606,551)
<TOTAL-LIABILITY-AND-EQUITY> 329,825
<SALES> 136,090
<TOTAL-REVENUES> 136,090
<CGS> 79,089
<TOTAL-COSTS> 115,600
<OTHER-EXPENSES> 14,695
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 2,568
<INCOME-PRETAX> 5,795
<INCOME-TAX> (1,700)
<INCOME-CONTINUING> 7,495
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 7,495
<EPS-BASIC> 0.00
<EPS-DILUTED> 0.00
</TABLE>