RELATED PARTY TRANSACTIONS: (Tables)

12 Months Ended

Dec. 31, 2013

Receivable and payable balances with related parties

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

	As of December 31,
	2013		2012
Related parties receivable current:
Grupo Mexico, S.A.B de C.V. (“Grupo Mexico”) and affiliates	$	0.8	$	1.8
Mexico Generadora de Energia S. de R.L. (“MGE”)	18.8		—
Compania Perforadora Mexico S.A.P.I. de C.V.	0.7		0.5
Compania Minera Coimolache S.A.	17.2		23.4
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.6		—
	$	38.1	$	25.7
Related parties receivable non-current:
MGE	$	161.2	$	184.0

Related parties payable:
Grupo Mexico and affiliates	$	3.3	$	—
MGE	14.4		—
Asarco LLC	6.2		15.3
Higher Technology S.A.C.	0.1		0.2
Breaker, S.A. de C.V	0.3		—
Sempertrans and affiliates	0.1		—
Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)	0.6		0.1
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	—		2.1
Ferrocarril Mexicano S.A. de C.V.	3.3		2.6
	$	28.3	$	20.3

Grupo Mexico and its affiliates

Related party transactions

Purchase and sales activities with related parties

The following table summarize the purchase and sale activities with Grupo Mexico and its affiliates in 2013, 2012 and 2011 (in millions):

	2013		2012		2011
Purchase activity
Grupo Mexico	$	13.8	$	13.9	$	13.9
Ferrocarril Mexicano, S.A de C.V.	19.7		13.9		11.6
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	54.4		49.5		38.2
Compania Perforadora Mexico S.A.P.I. de C.V.	6.1		2.2		1.8
MGE	14.4		—		—
Asarco LLC	98.0		58.6		23.4
Total Purchases	$	206.4	$	138.1	$	88.9

Sales activity
Asarco	$	88.7	$	23.5	$	68.8
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.8		0.5		0.5
Compania Perforadora Mexico S.A.P.I. de C.V.	0.6		—		0.2
MGE	27.3		—		—
Total	$	117.4	$	24.0	$	69.5

Companies with relationship to the controlling group

Related party transactions

Purchase and sales activities with related parties

The following table summarize the purchase and sales activities with other Larrea family companies in 2013, 2012 and 2011 (in millions):

	2013		2012		2011
Purchase activity
Mexico Compania de Productos Automotrices, S.A. de C.V.	$	—	$	—	$	0.2
Mextransport	2.7		2.7		2.8
Total purchase	$	2.7	$	2.7	$	3.0

Sales activity
Mextransport	$	0.3	$	0.9	$	—

Companies with relationship to SCC executive officers' families

Related party transactions

Purchase activity with related parties

The following table summarize the purchase activity with companies with relationships to SCC executive officers’ families in 2013, 2012 and 2011 (in millions):

	2013		2012		2011
Higher Technology S.A.C.	$	2.2	$	3.1	$	1.9
Servicios y Fabricaciones Mecanicas S.A.C.	0.4		0.2		0.6
Sempertrans	1.1		0.3		0.2
PIGOBA, S.A. de C.V.	0.3		0.8		0.2
Breaker, S.A. de C.V.	3.9		2.3		5.3
Total purchased	$	7.9	$	6.7	$	8.2

Equity investment in affiliate

Related party transactions

Conditions and balance of loan guarantee for related party

Conditions and balance of the loan as of December 31, 2013 are as follows (in millions):

	Loan
Total loan granted	$	56.6
Interest rate	6 months Libor + 3%
	(approximately 3.35%)
Remaining balance at December 31, 2013	$	17.2

Interest (in millions):

	Years ended December 31,
	2013		2012
Interest earned	$	0.9	$	1.9