0001163302-06-000043 Sample Contracts

Exhibit 4.1 THIRD SUPPLEMENTAL INDENTURE Dated as of December 13, 2006

Third Supplemental Indenture • December 13th, 2006 • United States Steel Corp • Steel works, blast furnaces & rolling mills (coke ovens) • New York

• Contract Type
  Third Supplemental Indenture
• Filed
  December 13th, 2006
• Company
  United States Steel Corp
• Industry
  Steel works, blast furnaces & rolling mills (coke ovens)
• Jurisdiction
  New York