INVENTORIES

Centrus holds uranium at licensed locations in the form of natural uranium and as the uranium component of low enriched uranium (“LEU”). Centrus holds separative work units (“SWU”) as the SWU component of LEU. Centrus may also hold title to the uranium and SWU components of LEU at fabricators to meet book transfer requests by customers. Fabricators process LEU into fuel for use in nuclear reactors. Components of inventories follow (in millions):



	March 31, 2015							December 31, 2014
	Current Assets		Current Liabilities (a)		Inventories, Net			Current Assets		Current Liabilities (a)		Inventories, Net
Separative work units	$	292.4	$	110.9	$	181.5		$	330.6	$	76.6	$	254.0
Uranium	126.6		129.1		(2.5		)	131.4		82.3		49.1
Materials and supplies	0.2		—		0.2			0.2		—		0.2
	$	419.2	$	240.0	$	179.2		$	462.2	$	158.9	$	303.3


(a)	Inventories owed to customers and suppliers, included in current liabilities, consist primarily of SWU and uranium inventories owed to fabricators.

Uranium Provided by Customers and Suppliers

Centrus held uranium with estimated values of approximately $0.6 billion as of March 31, 2015 and December 31, 2014 to which title was held by customers and suppliers and for which no assets or liabilities were recorded on the balance sheet. While in some cases Centrus sells both the SWU and uranium components of LEU to customers, utility customers typically provide uranium to Centrus as part of their enrichment contracts. Title to uranium provided by customers generally remains with the customer until delivery of LEU at which time title to LEU is transferred to the customer, and title to uranium is transferred to Centrus.