<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>poapkd.txt
<DESCRIPTION>EDGAR SUPPORTING DOCUMENT
<TEXT>
POWER OF ATTORNEY


	KNOW ALL MEN BY THESE PRESENTS, that the undersigned,
 a director and (or) officer of Harsco Corporation, a Delaware
 corporation (the "Company") does hereby nominate, constitute
 and appoint Stephen J. Schnoor, A. Verona Dorch,
 Katja Demeter- Fitzgerald and Debra L. Steele, or any one of them, his
 or her true and lawful attorneys and agents to do any and all
 acts and things and execute and file any and all
 instruments which said attorneys and agents, or either of
 them, may deem necessary or advisable to enable the
 undersigned (in his or her individual capacity or in a
 fiduciary or any other capacity) to comply with the
 Securities Exchange Act of 1934, as amended (the "Act"),
 and any requirements of the Securities and Exchange Commission
 in respect thereof, in connection with the preparation,
 execution and filing of any report or statement of beneficial
 ownership or changes in beneficial ownership of securities
 of the Company that the undersigned (in his or her individual
 capacity or in a fiduciary or any other capacity) may
 be required to file pursuant to Section 16(a) of the Act,
 including specifically, but without limitation, full power and
 authority to sign the undersigned's name, in his or her
 individual capacity or in a fiduciary or any other capacity,
 to any report or statement on Form 3, Form 4 or Form 5 or to
 any amendment thereto, or any form or forms adopted by the
 Securities and Exchange Commission in lieu thereof or in
 addition thereto, hereby ratifying and confirming all that said
 attorneys and agents, or any of them, shall do or cause to
 be done by virtue thereof.

	This authorization shall supersede all prior authorizations
 to act for the undersigned with respect to securities of the
 Company in these matters, and shall survive the termination
 of the undersigned's status as a director and (or) officer of
 the Company and remain in effect thereafter for so long as the
 undersigned (in his or her individual capacity or in a fiduciary
 or any other capacity) has any obligation under Section 16 of
 the Act with respect to securities of the Company.

	IN WITNESS WHEREOF, I have hereunto set my hand this
 10th day of September, 2012.


		/s/Patrick K. Decker
		Signature

		Patrick K. Decker
		Print Name
</TEXT>
</DOCUMENT>
