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Production Volume(Forecast) Volume ■Resources (Oil E&P) [KBOED,%] 5/9 Revised Change Forecast Forecast Norway 14.0 15.3 +1.2 +8.9% Vietnam 12.8 13.0 +0.3 +2.1% Total('000BOED) 26.8 28.3 +1.5 +5.7% Total('000BOE) 9,779 10,333 +554 +5.7% *The numbers reflect our rights and ownership ratios based on our equity share *Revised errors in Vietnam of forecast announced on 5/9 ■Resources (Coal) [kt,%] 5/9 Revised Change Forecast Forecast Ensham 1,190 1,660 +470 +39.5% Muswellbrook 0 15 +15 Boggabri 5,200 5,280 +80 +1.5% Total 6,390 6,955 +565 +8.8% *Fiscal year for Oil E&P and Coal included in the Resources Segment end in Dec. *The numbers reflect our rights and ownership ratios *Ensham was sold by the end of Aug. idemitsu Copyright Idemitsu Kosan Co., Ltd. All Rights Reserved. 47

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