companies, which controlled other companies, which in turn controlled yet other companies. According to Daniel Yergin in his Pulitzer Prize-winning The Prize: The Epic Quest for Oil, Money, and Power (1990), this conglomerate was seen by the public as all-pervasive, controlled by a select group of directors, and completely unaccountable. In 1904, Standard controlled 91 percent of production and 85 percent of final sales. Most of its output was kerosene, of which 55 percent was exported around the world. After 1900 it did not try to force competitors out of business by selling at a loss. The federal Commissioner of Corporations studied Standard's operations from the period of 1904 to 1906 and concluded that "beyond question ... the dominant position of the Standard Oil Co. in the refining industry was due to unfair practices—to abuse of the control of pipe-lines, to railroad discriminations, and to unfair methods of competition in the sale of the refined petroleum products". Because of competition from other firms, their market share gradually eroded to 70 percent by 1906 which was the year when the antitrust case was filed against Standard. Standard's market share was 64 percent by 1911 when Standard was ordered broken up. At least 147 refining companies were competing with Standard including Gulf, Texaco, and Shell. It did not try to monopolize the exploration and extraction of oil (its share in 1911 was 11 percent). In 1909, the U.S. Justice Department sued Standard under federal antitrust law, the Sherman Antitrust Act of 1890, for sustaining a monopoly and restraining interstate commerce by: Rebates, preferences, and other discriminatory practices in favor of the combination by railroad companies; restraint and monopolization by control of pipe lines, and unfair practices against competing pipe lines; contracts with competitors in restraint of trade; unfair methods of competition, such as local price cutting at the points where necessary to suppress competition; [and] espionage of the business of competitors, the operation of bogus independent companies, and payment of rebates on oil, with the like intent. The lawsuit argued that Standard's monopolistic practices had taken place over the preceding four years: The general result of the investigation has been to disclose the existence of numerous and flagrant discriminations by the railroads in behalf of the Standard Oil Co. and its affiliated corporations. With comparatively few exceptions, mainly of other large concerns in California, the Standard has been the sole beneficiary of