COMMITMENTS AND CONTINGENCIES: (Tables)

12 Months Ended

Dec. 31, 2024

COMMITMENTS AND CONTINGENCIES:

Schedule of environmental capital investments

Environmental capital investments in years 2024, 2023 and 2022, were as follows (in millions):

	2024		2023		2022
Peruvian operations	$	4.4	$	7.7	$	8.7
Mexican operations		173.0		100.6		52.7
	$	177.4	$	108.3	$	61.4