Exhibit 24
POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ J. Gary Cooper    
  J. Gary Cooper   
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ Robert J. Darnall    
  Robert J. Darnall    
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ John G. Drosdick    
  John G. Drosdick    
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ Richard A. Gephardt    
  Richard A. Gephardt   
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder,
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ Charles R. Lee    
  Charles R. Lee   
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ Jeffrey M. Lipton    
  Jeffrey M. Lipton   
     
 
         

 

 

         
     
     
     
     
 
POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ Frank J. Lucchino    
  Frank J. Lucchino   
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ Seth E. Schofield    
  Seth E. Schofield   
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ John P. Surma    
  John P. Surma  
     
 

 

 

POWER OF ATTORNEY
     KNOW ALL MEN BY THESE PRESENTS:
     That the undersigned does hereby make, constitute and appoint John P. Surma, Jr., Gretchen R. Haggerty, Larry G. Schultz and Larry T. Brockway or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf a registration statement on Form S-3 to be filed by United States Steel Corporation with the Securities and Exchange Commission in connection with the issuance of additional United States Steel Corporation Common Stock or other securities, and any and all amendments to such registration statement to be filed with the Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
     IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January, 2007.
         
     
  /s/ Douglas C. Yearley    
  Douglas C. Yearley