Exhibit 21. List of Significant Subsidiaries The following subsidiaries were 100 percent owned, either directly or indirectly, and were consolidated by the Corporation at December 31, 2001: State of jurisdiction Name of Subsidiary in which incorporated º£½ÇÉ¬Çø Kosice, s.r.o. Slovak Republic º£½ÇÉ¬Çø Mining Company, LLC Delaware