Book excerpt: Special 20-year financial performance review! Examines developments in the operations of the major U.S. energy-producing companies on a corporate level, by major line of business, by major function within each line of business, and by geographic area. Presents data collected for CY 1993. Features strategies following the Arab Oil Embargo of 1973-74. The analysis represents the operations of the companies in the context of their worldwide operations and in the context of major energy markets which they serve. Tables and graphs. Valuable 11-page glossary!