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INCOME TAXES: (Tables)

3 Months Ended

Mar. 31, 2022

INCOME TAXES:

Schedule of income tax provision and effective income tax rate

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The income tax provision and the effective income tax rate for the first three months of 2022 and 2021 consisted of (in millions):

​	​	​	​	​	​	​	​
​		2022			2021		​
Statutory income tax provision	​	$	511.6	​	$	427.3	​
Peruvian royalty	​		17.0	​		11.6	​
Mexican royalty	​		58.0	​		47.4	​
Peruvian special mining tax	​		25.5	​		21.2	​
Total income tax provision	​	$	612.1	​	$	507.5	​
​	​	​	​	​	​	​	​
Effective income tax rate	​	​	43.8	%	​	40.1	%

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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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