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SUBSEQUENT EVENTS: (Details)	Oct. 17, 2019 $ / shares	Jul. 15, 2019 complaint
Tia Maria | Peru
SUBSEQUENT EVENTS:
Number of complaints | complaint		3
Subsequent Events
SUBSEQUENT EVENTS:
Quarterly dividend authorized (in dollars per share) | $ / shares	$ 0.40

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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