RELATED PARTY TRANSACTIONS: (Tables)

9 Months Ended

Sep. 30, 2013

Receivable and payable balances with related parties are shown below (in millions):

	As of
	September 30, 2013		December 31, 2012
Related parties receivables, current:
Grupo Mexico, S.A.B de C.V. (“Grupo Mexico”) and affiliates	$	0.8	$	1.8
Mexico Generadora de Energía S. de R.L. (“MGE”)	8.2		—
Compania Perforadora Mexico, S.A.P.I. de C.V.	0.9		0.5
Compania Minera Coimolache S.A.	20.5		23.4
	$	30.4	$	25.7

Related parties receivable, non-current:
MGE	$	161.2	$	184.0

Related parties payables:
Grupo Mexico and affiliates	$	0.8	$	—
Asarco LLC	6.8		15.3
Higher Technology S.A.C.	0.1		0.2
Breaker S.A. de C.V	0.2		—
Mexico Transportes Aereos, S.A. de C.V. (“Mextransport”)	0.3		0.1
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	1.8		2.1
Ferrocarril Mexicano, S.A. de C.V.	3.4		2.6
	$	13.4	$	20.3

The following table summarizes the purchase activity with related parties in the nine months ended September 30, 2013 and 2012 (in millions):

	Nine months ended September 30,
	2013		2012
Grupo Mexico and affiliates:
Grupo Mexico Servicios, S.A de C.V	$	10.4	$	10.5
Asarco LLC	82.0		33.0
Ferrocarril Mexicano, S.A de C.V.	14.9		10.7
Compania Perforadora Mexico, S.A.P.I. de C.V and affiliates	4.1		2.2
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	36.5		37.2

OtherLarrea family companies:
Mextransport	2.0		2.0

Companies with relationships to SCC executive officers families:
Higher Technology S.A.C.	1.7		2.3
Servicios y Fabricaciones Mecanicas S.A.C.	0.2		0.1
Sempertrans	1.0		0.1
PIGOBA, S.A. de C.V.	0.1		0.5
Breaker, S.A. de C.V.	2.7		1.8
Total purchased	$	155.6	$	100.4

The following table summarizes the sales and other revenue activity in the three and nine months ended September 30, 2013 and 2012 (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Asarco	$	—	$	11.5	$	71.8	$	22.9
Mexico Proyectos y Desarrollos, S.A. de C.V.	0.2		0.1		0.6		0.3
Compania Perforadora Mexico, S.A.P.I. de C.V and affiliates	0.1		0.2		0.4		0.2
MGE	10.9				11.6
Mextransport	—		0.1		0.2		0.9
Total	$	11.2	$	11.9	$	84.6	$	24.3

Compania Minera Coimolache S.A.

Conditions and balance of the loan as of September 30, 2013 are as follows ($ in millions):

		Loan
Total loan granted		$56.6
Interest rate		6 months Libor + 3%
		(approximately 3.45)%
Remaining balance at September 30, 2013		$20.5