RELATED PARTY TRANSACTIONS: (Tables)

9 Months Ended

Sep. 30, 2014

Receivable and payable balances with related parties

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

	At September 30, 2014		At December 31, 2013
Related parties receivables, current:
Grupo Mexico S.A. de C.V.	$	0.8	$	0.8
Mexico Generadora de Energia S. de R.L. (“MGE”)	26.4		18.8
Compania Perforadora Mexico, S.A.P.I. de C.V. and affiliates	1.2		0.7
Compania Minera Coimolache S.A.	—		17.2
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	—		0.6
	$	28.4	$	38.1

Related parties receivable, non-current:
Mexico Generadora de Energia S. de R.L.	$	161.2	$	161.2

Related parties payables:
Grupo Mexico S.A. de C.V.	$	0.8	$	3.3
Mexico Generadora de Energia S. de R.L.	39.9		14.4
Asarco LLC	18.4		6.2
Higher Technology S.A.C.	0.1		0.1
Breaker S.A. de C.V and affiliates (“Breaker”)	0.6		0.3
Sempertrans and affiliates	0.1		0.1
Mexico Transportes Aereos, S.A. de C.V. (“Mextransport”)	1.0		0.6
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.7		—
Pigoba	0.1		—
Ferrocarril Mexicano, S.A. de C.V.	3.8		3.3
	$	65.5	$	28.3

Grupo Mexico, S.A.B de C.V. ( Grupo Mexico ) and affiliates

Related party transactions

Purchase and sales activities with related parties

The following table summarizes the purchase and sales activities with Grupo Mexico and its affiliates in the nine months ended September 30, 2014 and 2013 (in millions):

	Nine months ended September 30,
	2014		2013
Purchase activity
Grupo Mexico S.A. de C.V.	$	10.4	$	10.4
Asarco LLC.	39.5		82.0
Ferrocarril Mexicano S.A de C.V.	17.3		14.9
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	76.8		36.5
Mexico Generadora de Energia S. de R.L.	137.2		—
Compania Perforadora Mexico S.A.P.I. de C.V and affiliates	2.6		4.1
Total purchases	$	283.8	$	147.9

Sales activity
Asarco LLC	$	22.1	$	71.8
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.6		0.6
Compania Perforadora Mexico S.A.P.I. de C.V and affiliates	0.4		0.4
Mexico Generadora de Energia S. de R.L.	75.5		11.6
Total sales	$	98.6	$	84.4

Companies with relationship with the controlling group

Related party transactions

Purchase and sales activities with related parties

The following tables summarize the purchase and sales activities with other Larrea family companies in the nine months ended September 30, 2014 and 2013 (in millions):

	Nine months ended September 30,
	2014		2013
Mextransport:
Purchase activity	$	2.1	$	2.0

Sales activity	$	0.2	$	0.2

Companies with relationship with SCC executive officers' families

Related party transactions

Purchase activities with related parties

The following table summarizes the purchase activities with companies with relationships with SCC executive officers in the nine months ended September 30, 2014 and 2013 (in millions):

	Nine months ended September 30,
	2014		2013
Higher Technology S.A.C.	$	2.1	$	1.7
Servicios y Fabricaciones Mecanicas S.A.C.	1.1		0.2
Sempertrans and affiliates	0.9		1.0
Breaker	5.7		2.7
Pigoba S.A. de C.V.	0.4		0.1
Total purchases	$	10.2	$	5.7