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INCOME TAXES: (Tables)

9 Months Ended

Sep. 30, 2025

INCOME TAXES:

Schedule of income tax provision and effective income tax rate

The income tax provision and the effective income tax rate for the nine-month periods ended September 30, 2025 and 2024 consisted of (in millions):

​	​	​	​	​	​	​	​
​		2025			2024		​
Statutory income tax provision	​	$	1,451.1	​	$	1,298.7	​
Peruvian royalty	​		49.9	​		45.5	​
Mexican royalty	​		151.3	​		116.3	​
Peruvian special mining tax	​		76.1	​		68.1	​
Total income tax provision	​	$	1,728.4	​	$	1,528.6	​
​	​	​	​	​	​	​	​
Effective income tax rate	​	​	36.4	%	​	37.2	%

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- Definition

Disclosure of the income tax provision attributable to continuing operations and the effective income tax rate.

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- References

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