EX-24 9 a20191231ex24.htm EXHIBIT 24 Exhibit


POWER OF ATTORNEY

The undersigned does hereby make, constitute and appoint Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ David B. Burritt
David B. Burritt






POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ Patricia Diaz Dennis
Patricia Diaz Dennis





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.
/s/ Dan O. Dinges
Dan O. Dinges





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ John J. Engel
John J. Engel





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ John V. Faraci
John V. Faraci





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or either one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ Murry S. Gerber
Murry S. Gerber





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2019.

/s/ Stephen J. Girsky
Stephen J. Girsky





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ Paul A. Mascarenas
Paul A. Mascarenas





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ Michael H. McGarry
Michael H. McGarry





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ Eugene B. Sperling
Eugene B. Sperling





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ David S. Sutherland
David S. Sutherland





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Christine S. Breves and Kimberly D. Fast or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2019 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, 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 14th day of February, 2020.

/s/ Patricia A. Tracey
Patricia A. Tracey