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INCOME TAXES: (Details 3) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Assets: |  |
Inventories | $ 27.6 | $ 32.5
Capitalized exploration expenses | 20.1 | 27.8
U.S. foreign tax credit carryforward, net of FIN 48 liability | 187.4 | 144.8
U.S. tax effect of Peruvian deferred tax liability | 171.2 | 251.4
Reserves | 42.3 | 101.7
Mexican tax on consolidated dividends | 5.5 |
Other | 22.8 | 19.8
Total deferred tax assets | 476.9 | 578.0
Liabilities: |  |
Property, plant and equipment | (18.5) | (213.0)
Deferred charges | (38.1) | (74.9)
Other | (2.1) | (9.8)
Total deferred tax liabilities | (58.7) | (303.4)
Total net deferred tax assets / (liabilities) | $ 418.2 | $ 274.6

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