COMMITMENTS AND CONTINGENCIES: (Tables)

9 Months Ended

Sep. 30, 2020

COMMITMENTS AND CONTINGENCIES:

Schedule of environmental capital investments

Environmental capital investments in the nine months ended September 30, 2020 and 2019 were as follows (in millions):

	2020		2019
Peruvian operations (*)	$	(4.0)	$	12.9
Mexican operations		28.6		55.9
	$	24.6	$	68.8

(*) The activity, in the nine months of 2020, include prepayment settlements classified to expenses.