Chevron Corp. has not yet completed its merger with Texaco Inc. An article in The BusinessWeek 50, "Virtual prospecting" (Bonus Issue, Spring, 2001) said the merger had been finalized. A chart of Exxon Mobil Corp.'s oil and gas properties ("Exxon unleashed," Cover Story, Apr. 9) should have listed Exxon's Equatorial Guinea acreage with its Africa properties.