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Inventories (Tables) | 9 Months Ended
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Sep. 30, 2016
Inventory Disclosure [Abstract] |
Breakdown of Inventories | The following table provides a breakdown of inventories at September 30, 2016 and December 31, 2015 (in thousands):
| September 30, |  | December 31,
| 2016 |  | 2015
Finished goods | $ | 335,694 |  |  | $ | 264,025 |
Raw materials and work in process(a) | 117,955 |  |  | 122,038 |
Stores, supplies and other | 51,335 |  |  | 53,450 |
Total inventories(b) | $ | 504,984 |  |  | $ | 439,513 |
(a) | Included $45.9 million and $39.1 million at September 30, 2016 and December 31, 2015, respectively, of work in process related to the Lithium product category.
(b) | As of September 30, 2016 and December 31, 2015, $74.5 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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