Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of maturity analysis of operating lease payments [text block]

Future minimum rentals payable as of December 31 are the following:

	2018		2017
	US$(000)		US$(000)

Within one year		1,543		1,543
After one year but not more than five years		5,787		6,173
More than five years		-		1,157

		7,330		8,873

Disclosure of finance lease and operating lease by lessor [text block]

The Group leases for several of its assets. These leases have purchase options. Below is a table showing future minimum lease payments and the present value of these payments:

	2018					2017
	Minimum payments			Present value of payments		Minimum payments			Present value of payments
	US$(000)			US$(000)		US$(000)			US$(000)

Within a year		53,607			41,634		56,915			40,224
After one year but not more than five years		210,252			200,019		267,962			241,652

Total minimum lease payments		263,859			241,653		324,877			281,876

Less - amounts representing finance charges		(22,206	)		-		(43,001	)		-

Present value of minimum lease payments		241,653			241,653		281,876			281,876

Minera Yanacocha SRL and subsidiary [Member]

Disclosure of commitments [text block]

The table below sets out the outstanding signed commitments at year ends by financial institution.

	2018		2017
	US$(000)		US$(000)

Banco de Credito del Peru (a)		114,251		123,729
BBVA Continental		190,000		190,000
Scotiabank		235,000		190,000

		539,251		503,729

(a)

Letters of guarantee of Banco de Credito del Peru include US$6,321,000 related to San Jose Reservoir Trust in 2017. In 2018 letters of guarantee were not required.