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Inventories (Tables) | 6 Months Ended
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Jun. 30, 2016
Inventory Disclosure [Abstract] |
Breakdown of Inventories | The following table provides a breakdown of inventories at June 30, 2016 and December 31, 2015 (in thousands):
| June 30, |  | December 31,
| 2016 |  | 2015
Finished goods | $ | 352,583 |  |  | $ | 264,025 |
Raw materials and work in process(a) | 114,978 |  |  | 122,038 |
Stores, supplies and other | 49,491 |  |  | 53,450 |
Total inventories(b) | $ | 517,052 |  |  | $ | 439,513 |
(a) | Includes $44.0 million and $39.1 million at June 30, 2016 and December 31, 2015, respectively, of work in process related to the Lithium product category.
(b) | As of June 30, 2016 and December 31, 2015, $69.9 million and $162.8 million, respectively, of inventories were classified as Assets held for sale in the condensed consolidated balance sheets. See Note 3, “Divestitures,” for additional information.

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