STOCKHOLDERS' EQUITY: (Tables)

9 Months Ended

Sep. 30, 2014

Activity in treasury stock in the nine-month period ended September 30, 2014 and 2013 is as follows (in millions):

	2014			2013
Southern Copper common shares
Balance as of January 1,	$	1,011.0		$	729.8
Purchase of shares	388.9			124.0
Used for corporate purposes	(0.2		)	(0.3		)
Balance as of September 30,	1,399.7			853.5

Parent Company (Grupo Mexico) common shares
Balance as of January 1,	205.6			189.0
Other activity, including dividend, interest and currency translation effect	6.2			12.9
Balance as of September 30,	211.8			201.9

Treasury stock balance as of September 30,	$	1,611.5		$	1,055.4

Schedule of share distributions

	2014	2013
Southern Copper common shares
Directors’ Stock Award Plan	12,000	12,000

Parent Company (Grupo Mexico) common shares
Employee stock purchase plan (shares in millions)	0.9	2.5

Schedule of share repurchase program activity

Period		Total Number of	Average Price Paid		Total Number of Shares Purchased as Part of Publicly	Maximum Number of Shares that May Yet Be Purchased Under	Total Cost
From	To	Shares Purchased	per Share		Announced Plan	*the Plan @ $29.65 ()**	($ in millions)
2008:		28,510,150	$	13.49	28,510,150		$	384.7
2009:		4,912,000	14.64		33,422,150		71.9
2010:		15,600	29.69		33,437,750		0.5
2011:		9,034,400	30.29		42,472,150		273.7
2012:		4,442,336	33.17		46,914,486		147.3
2013:		10,245,000	27.47		57,159,486		281.4
2014:
01/01/14	01/31/14	1,768,000	28.06		58,927,486		49.6
03/01/14	03/21/14	106,079	27.04		59,033,565		2.9
Total first quarter		1,874,079	28.00				52.5

06/01/14	06/30/14	450,532	28.92		59,484,097		13.0
Total second quarter		450,532	28.92				13.0

07/01/14	07/31/14	724,516	33.04		60,208,613		23.9
08/01/14	08/31/14	4,926,534	32.09		65,135,147		158.1
09/01/14	09/30/14	4,498,263	31.44		69,633,410		141.4
Total third quarter		10,149,313	31.87				323.4

Total purchased		69,633,410	$	22.24		15,229,726	$	1,548.4

(*) NYSE closing price of SCC common shares at September 30, 2014.

Schedule of activity in Directors' Stock Award Plan

	2014		2013
Total SCC shares reserved for the plan	600,000		600,000

Total shares granted at January 1,	(297,600	)	(285,600	)
Granted in the period	(12,000	)	(12,000	)
Total shares granted at September 30,	(309,600	)	(297,600	)

Remaining shares reserved	290,400		302,400

Employee Stock Purchase 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, 2014 and 2013, under the Employee Stock Purchase Plan and the unrecognized compensation expense as of September 30, 2014 and 2013 under this plan were as follows (in millions):

	2014		2013
Stock based compensation expense	$	1.6	$	1.6
Unrecognized compensation expense	$	0.5	$	2.6

Schedule of stock award activity

	Shares		Unit Weighted Average Grant Date Fair Value

Outstanding shares at January 1, 2014	4,449,599		$	1.16
Granted	—		—
Exercised	(140,545	)	1.16
Forfeited	—		—
Outstanding shares at September 30, 2014	4,309,054		$	1.16

Outstanding shares at January 1, 2013	6,955,572		$	1.16
Granted	—		—
Exercised	(2,396,354	)	1.16
Forfeited	(31,159	)	1.16
Outstanding shares at September 30, 2013	4,528,059		$	1.16

New Employee Stock Purchase 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, 2014 and 2013 under the New Employee Stock Purchase Plan and the unrecognized compensation expense as of September 30, 2014 and 2013 under this plan were as follows (in millions):

	2014		2013
Stock based compensation expense	$	0.4	$	0.4
Unrecognized compensation expense	$	2.2	$	2.8

Schedule of stock award activity

	Shares		Unit Weighted Average Grant Date Fair Value

Outstanding shares at January 1, 2014	3,012,464		$	2.05
Granted	—		—
Exercised	(724,573	)	2.05
Forfeited	—		—
Outstanding shares at September 30, 2014	2,287,891		2.05

Outstanding shares at January 1, 2013	2,944,742		$	2.05
Granted	226,613		2.05
Exercised	(22,470	)	2.05
Forfeited	(103,513	)	2.05
Outstanding shares at September 30, 2013	3,045,372		$	2.05