POWER OF ATTORNEY


      Know all by these presents, that the undersigned hereby constitutes and appoints each of
Stephen A. Schwarzman, Hamilton E. James, J. Tomilson Hill, Jonathan D. Gray, Joan Solotar,
John G. Finley, Christopher J. James and Tabea Y. Hsi, signing singly, the undersigned's true and
lawful attorney-in-fact to:


(1)	execute for and on behalf of the undersigned, in the undersigned's capacity as an officer
and/or director of Blackstone Group Management L.L.C., a Delaware limited liability company (the
"General Partner") and the general partner of The Blackstone Group L.P. (the "Partnership"), Forms
3, 4, and 5 in accordance with Section 16(a) of the U.S. Securities Exchange Act of 1934, as amended,
and the rules thereunder;


(2)	do and perform any and all acts for and on behalf of the undersigned which may be necessary
or desirable to complete and execute any such Form 3, 4, or 5, complete and execute any amendment or
amendments thereto, and timely file such form with the U.S. Securities and Exchange Commission and
any stock exchange or similar authority; and


(3)	take any other action of any type whatsoever in connection with the foregoing which, in the
opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required
by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf
of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such
terms and conditions as such attorney-in-fact may approve in such attorney-in-fact's discretion.


      The undersigned hereby grants to each such attorney-in-fact full power and authority to do and
perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned
might or could do if personally present, with full power of substitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request
of the undersigned, are not assuming, nor is the General Partner or the Partnership assuming, any of the
undersigned's responsibilities to comply with Section 16 of the U.S. Securities Exchange Act of 1934, as
amended, or the rules thereunder.


      This Power of Attorney shall remain in full force and effect until the undersigned, after becoming
subject to the requirements to file Forms 3, 4 and 5 with respect to the undersigned's holdings of and
transactions in any equity security or derivative security relating to the Partnership (whether or not issued
by the Partnership), ceases to be subject to those requirements, unless earlier revoked by the undersigned in
a signed writing delivered to the foregoing attorneys-in-fact.


				[Signature page follows]


      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 27th day
of July, 2012.


/s/ Laurence A. Tosi
________________________

Laurence A. Tosi