press release

Unocal's 2Q 2003 earnings conference call set for July 30

El Segundo, Calif., July 9. 2003 -- Unocal Corporation (NYSE: UCL) will discuss its second quarter 2003 financial and operating results in a conference call webcast on Unocal's web site (www.unocal.com) on Wednesday, July 30, 2003. The conference call will begin at 8:00 a.m. PDT (11:00 a.m. EDT).

Investors, analysts, stockholders, news media, employees and the general public are invited to listen to the webcast. Listeners can use RealPlayer or Windows Media Player. Replays and transcripts of the conference call will be available on the Unocal web site through Aug. 29, 2003.

Robert E. Wright, vice president of Investor Relations for Unocal, will be the conference call moderator. Charles R. Williamson, Unocal chairman and chief executive officer; Timothy H. Ling, Unocal president and chief operating officer; and Terry G. Dallas, Unocal chief financial officer, will also participate in the call. Unocal will offer graphics during the call that can be viewed or downloaded onto your computer from the Unocal web site.

Unocal expects to announce its second quarter 2003 earnings results on July 29 following the close of trading on the NYSE.

About Unocal Corporation

Unocal is one of the world's leading independent natural gas and crude oil exploration and production companies. The company's principal oil and gas activities are in North America and Asia.

Updated: July 2003