SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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1. Name and Address of Reporting Person*
Greene Stephen S

(Last) (First) (Middle)
6903 ROCKLEDGE DRIVE

(Street)
BETHESDA MD 20817

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
02/08/2007
3. Issuer Name and Ticker or Trading Symbol
USEC INC [ USU ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Vice President and Treasurer
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
Remarks:
No securities are beneficially owned.
/s/ Greene, Stephen S. 02/15/2007
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
                             POWER OF ATTORNEY



Know all persons by these presents that Stephen S. Greene whose
signature appears below constitutes and appoints Timothy B.
Hansen, John C. Barpoulis and Kerri R. Morey and each of them,
as his true and lawful attorney-in-fact and agent, with full
and several power of substitution and with authority to act
alone, for him and in his name, place and stead, in any and all
capacities to:

(1) execute for and on behalf of the undersigned Forms 3, 4
and 5 and any amendments and supplements to those forms in
accordance with Section 16(a) of the Securities Exchange Act
of 1934 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 the
execution of any such Form 3, 4, or 5 and any amendments and
supplements to those forms and file such form with the United
States Securities and Exchange Commission, the New York Stock
Exchange and any other authority; and

(3) take any other action of any type whatsoever in connection
with the foregoing that, 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 his/her discretion;

granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite
and necessary to be done in and about the premises, as fully to
all intents and purposes as they or he might or could do in
person, hereby ratifying and confirming all that said attorney-
in-fact and agent or his or their substitute or substitutes may
lawfully do or cause to be done by virtue thereof.

This Power of Attorney is continuing and shall remain in effect
so long as the undersigned is a officer of USEC Inc., a Delaware
corporation, unless the undersigned executes and delivers to the
Secretary of USEC Inc. a written revocation of this Power of Attorney.

The undersigned acknowledges that each foregoing attorney-in-fact,
in serving in such capacity at the request of the undersigned, is
not assuming any of the undersigned's responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934.


Date:    2/15/07			               /s/ Stephen S. Greene