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Segment Information
 3 Months Ended
Mar. 31, 2013
Segment Information  
Segment Information
16. SEGMENT INFORMATION

USEC has two reportable segments: the LEU segment with two components, SWU and uranium, and the contract services segment. The LEU segment is USEC's primary business focus and includes sales of the SWU component of LEU, sales of both the SWU and uranium components of LEU, and sales of uranium. The contract services segment consists of work performed for DOE and DOE contractors at the Portsmouth site and the Paducah GDP. The contract services segment formerly included nuclear energy services and technologies provided by NAC International Inc. Refer to Note 2 regarding the sale of NAC in March 2013 and results of operations for NAC. Gross profit is USEC's measure for segment reporting. There were no intersegment sales in the periods presented.

Three Months Ended
March 31,
2013
2012
(millions)
Revenue
LEU segment:
Separative work units
$ 290.2 $ 537.9
Uranium
27.6 -
317.8 537.9
Contract services segment
2.6 4.1
$ 320.4 $ 542.0
Segment Gross Profit
LEU segment
$ 14.0 $ 36.7
Contract services segment
(0.7 ) -
Gross profit
$ 13.3 $ 36.7