AMENDMENT NO. 004 TO COOPERATIVE AGREEMENT DE-NE0000530 BETWEEN DEPARTMENT OF ENERGY (“DOE”), USEC INC. (“USEC”), AND AMERICAN CENTRIFUGE DEMONSTRATION, LLC (“ACD”) (collectively, the “Agreement”)

EXHIBIT 10.2

DE-NE0000530

Amendment 004

AMENDMENT NO. 004

TO

COOPERATIVE AGREEMENT DE-NE0000530 BETWEEN

DEPARTMENT OF ENERGY (“DOE”),

USEC INC. (“USEC”),

AND

AMERICAN CENTRIFUGE DEMONSTRATION, LLC (“ACD”)

(collectively, the “Agreement”)

The purpose of the amendment is to revise the DOE Award Administrator/Contracting Officer and the DOE Program Manager identified in Article 4 - Agreement Administrators.

Accordingly,

1. The DOE Award Administrator/Contracting Officer identified in Article 4.01 is revised as follows:

DOE Award Administrator/Contracting Officer:

Xxxxx Xxxxxx, Contracting Officer

U.S. Department of Energy, Oak Ridge Xxxxxx

000 Xxxxxxxxxxxxxx Xxxx

XX-000

Xxx Xxxxx, XX 00000

Telephone: 000-000-0000

Email: xxxxxxxx@xxx.xxx.xxx

2. The DOE Program Manager identified in Article 4.02 is revised as follows:

DOE Program Manager:

Xxxxx Xxxxxxxxx

U.S. Department of Energy

Office of Nuclear Energy

0000 Xxxxxxxxxxxx Xxx. XX, Xxxxxxxxxx, XX 00000

Telephone: (000) 000-0000

Email: xxxxx.xxxxxxxxx@xx.xxx.xxx

3. All other terms and conditions of the Agreement remain the same.

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Acknowledgement of Authorized Recipient Representatives

/s/ Xxxxxx X. Xxxxxx 3/26/13

Xxxxxx X. Xxxxxx Date

Senior Vice President

USEC Inc.

/s/ Xxxx Xxxxxxxx 3/29/13

Xxxx Xxxxxxxx Date

Project Manager

American Centrifuge Demonstration, LLC

Signature of Department of Energy Contracting Officer

/s/ Xxxxxxx X. Xxxxxx 3/27/13

Xxxxxxx X. Xxxxxx Date

Contracting Officer

U.S. Department of Energy

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