Occidental Petroleum Corp 19 February 2001 Letter to Company Announcement Office We wish to advise you that Occidental's Board of Directors has fixed the time and date for the 2001 Annual Meeting of Stockholders at 10:30 a.m., Friday, April 20,2001. The meeting will be held in the Fairmont Miramar Hotel, 101 Wilshire Boulevard, Santa Monica, California. The close of business on March 2, 2001, has been fixed as the record date for the determination of stockholders entitled to notice of and to vote at this meeting. From Occidental Petroleum Corporation