| Inventories Table |
Inventories consisted of the following: | | | | | | | | | | | | | | September 30, 2017 | | December 31,
2016 | | September 30, 2016 | | ($ in millions) | Supplies | $ | 60.3 |
| | $ | 58.1 |
| | $ | 58.1 |
| Raw materials | 85.4 |
| | 72.6 |
| | 79.1 |
| Work in process | 120.6 |
| | 110.7 |
| | 114.7 |
| Finished goods | 470.7 |
| | 424.9 |
| | 405.9 |
| | 737.0 |
| | 666.3 |
| | 657.8 |
| LIFO reserve | (47.5 | ) | | (35.9 | ) | | (40.8 | ) | Inventories, net | $ | 689.5 |
| | $ | 630.4 |
| | $ | 617.0 |
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