COMMITMENTS AND CONTINGENCIES: (Tables)

9 Months Ended

Sep. 30, 2021

COMMITMENTS AND CONTINGENCIES:

Schedule of environmental capital investments

Environmental capital investments in the first nine months of 2021 and 2020 were as follows (in millions):

	2021		2020
Peruvian operations (*)	$	2.9	$	(4.0)
Mexican operations		57.7		28.6
	$	60.6	$	24.6

(*) The activity in 2020 for the Peruvian operations includes prepayment settlements classified to expenses.