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STOCKHOLDERS' EQUITY: (Tables)

9 Months Ended

Sep. 30, 2016

STOCKHOLDERS' EQUITY:

Schedule of activity in treasury stock

Activity in treasury stock in the nine-month period ended September 30, 2016 and 2015 is as follows (in millions):

		2016			2015
Southern Copper common shares
Balance as of January 1,		$	2,697.6		$	1,693.5
Purchase of shares		71.7			724.4
Used for corporate purposes		(0.3		)	(0.4		)
Balance as of September 30,		2,769.0			2,417.5
Parent Company (Grupo Mexico) common shares
Balance as of January 1,		211.3			207.2
Other activity, including dividend, interest and currency transaction effect		6.7			(6.9		)
Balance as of September 30,		218.0			200.3
Treasury stock balance as of September 30,		$	2,987.0		$	2,617.8

Schedule of share distributions

The following table summarizes share distributions in the nine months of 2016 and 2015:

		2016		2015
Southern Copper common shares
Directors’ Stock Award Plan		12,000		13,200
Parent Company (Grupo Mexico) common shares
Employee stock purchase plan (shares in millions)		0.9		4.3

Schedule of share repurchase program activity

Period				Total Number  of Shares		Average  Price  Paid per			Total Number of  Shares Purchased  as Part of  Publicly		Maximum Number of Shares that May Yet Be Purchased Under the Plan		Total Cost
From		To		Purchased		Share			Announced Plan		@ $26.30 (*)		($ in millions)
2008		2012		46,914,486		$	18.72		46,914,486				$	878.1
2013				10,245,000		27.47			57,159,486				281.4
2014				22,711,428		30.06			79,870,914				682.8
2015				36,689,052		27.38			116,559,966				1,004.4
2016
01/01/16		01/31/16		2,235,200		24.05			118,795,166				53.7
Total first quarter				2,235,200		24.05							53.7
08/01/16		08/31/16		115,000		25.88			118,910,166				3.0
09/01/16		09/30/16		587,601		25.55			119,497,767				15.0
Total third quarter				702,601		25.61							18.0
Total purchased				119,497,767		$	24.42				3,103,930		$	2,918.4

(*) NYSE closing price of SCC common shares at September 30, 2016.

Schedule of activity in Directors' Stock Award Plan

		2016		2015
Total SCC shares reserved for the plan		600,000		600,000
Total shares granted at January 1,		(322,800	)	(309,600	)
Granted in the period		(12,000	)	(13,200	)
Total shares granted at September 30,		(334,800	)	(322,800	)
Remaining shares reserved		265,200		277,200

Summary of non-controlling interest activity

The following table presents the non-controlling interest activity for the nine months ended September 30, 2016 and 2015 ($ in millions):

		2016			2015
Balance as of January 1,		$	36.3		$	32.1
Net earnings		1.9			3.5
Dividend paid		—			(0.5		)
Other		—			—
Balance as of September 30,		$	38.2		$	35.1

Employee Stock Purchase 2007 Plan

STOCKHOLDERS' EQUITY:

Schedule of stock award activity

The following table presents the stock award activity of the Employee Stock Purchase Plan at the close of the plan and for the nine months ended September 30, 2016:

		Shares		Unit Weighted Average Grant Date Fair Value
Outstanding shares at January 1, 2016		109,241		$	1.16
Granted		—		—
Exercised		(64,380	)	1.16
Forfeited		—		—
Outstanding shares at September 30, 2016		44,861		$	1.16
Outstanding shares at January 1, 2015		4,298,612		$	1.16
Granted		—		—
Exercised		(4,189,371	)	1.16
Forfeited		—		—
Outstanding shares at September 30, 2015		109,241		$	1.16

Employee Stock Purchase 2010 Plan

STOCKHOLDERS' EQUITY:

Schedule of stock based compensation expense and unrecognized compensation expense

The stock based compensation expense for the nine months ended September 30, 2016 and 2015 and the unrecognized compensation expense under this plan were as follows (in millions):

		2016			2015
Stock based compensation expense		$	0.4		$	0.4
Unrecognized compensation expense		$	1.2		$	1.7

Schedule of stock award activity

The following table presents the stock award activity of the New Employee Stock Purchase Plan for the nine months ended September 30, 2016 and 2015:

		Shares		Unit Weighted Average Grant Date Fair Value
Outstanding shares at January 1, 2016		2,227,582		$	2.05
Granted		—		—
Exercised		(740,601	)	2.05
Forfeited		—		—
Outstanding shares at September 30, 2016		1,486,981		$	2.05
Outstanding shares at January 1, 2015		2,287,891		$	2.05
Granted		—		—
Exercised		(60,309	)	2.05
Forfeited		—		—
Outstanding shares at September 30, 2015		2,227,582		$	2.05

Employee Stock Purchase 2015 Plan

STOCKHOLDERS' EQUITY:

Schedule of stock based compensation expense and unrecognized compensation expense

The stock based compensation expense for the nine months of 2016 and 2015 and the unrecognized compensation expense under this plan were as follows ($ in millions):

		2016			2015
Stock based compensation expense		$	0.4		$	0.2
Unrecognized compensation expense		$	4.0		$	4.6

Schedule of stock award activity

The following table presents the stock award activity of this plan for the nine months ended September 30, 2016 and 2015:

		Shares		Unit Weighted Average Grant Date Fair Value
Outstanding shares at January 1, 2016		2,656,386		$	2.63
Granted		—		—
Exercised		(103,852	)	2.63
Forfeited		—		—
Outstanding shares at September 30, 2016		2,552,534		$	2.63
Outstanding shares at January 1, 2015		—		—
Granted		2,656,386		$	2.63
Exercised		—		—
Forfeited		—		—
Outstanding shares at September 30, 2015		2,656,386		$	2.63

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