RELATED PARTY TRANSACTIONS: (Tables)

9 Months Ended

Sep. 30, 2015

Related party transactions

Receivable and payable balances with related parties

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

	At September 30, 2015		At December 31, 2014
Related parties receivable current:
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates	$	0.6	$	0.2
Grupo Mexico	0.7		0.7
Mexico Generadora de Energia S. de R.L. (“MGE”)	30.6		31.9
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.1		—
	$	32.0	$	32.8
Related parties receivable non-current:
MGE	$	161.2	$	161.2
Related parties payable:
Asarco LLC	$	13.6	$	13.8
Breaker S.A. de C.V. and affiliates (“Breaker”)	0.6		0.7
Eolica El Retiro, S.A.P.I. de C.V.	0.1		1.6
Ferrocarril Mexicano S.A. de C.V.	1.7		1.8
Grupo Mexico	7.7		2.8
Higher Technology S.A.C.	—		0.2
MGE	22.8		45.2
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	4.0		1.7
Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)	1.0		1.3
	$	51.5	$	69.1

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, 2015 and 2014 (in millions):

	2015		2014
Purchase activity
Asarco LLC	$	23.9	$	39.5
Compania Perforadora Mexico S.A.P.I. de C.V and affiliates	0.3		2.6
Eolica El Retiro, S.A.P.I. de C.V.	7.1		—
Ferrocarril Mexicano S.A de C.V.	17.8		17.3
Grupo Mexico	10.4		10.4
MGE	97.1		137.2
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	44.2		76.8
Total purchases	$	200.8	$	283.8
Sales activity
Asarco LLC	$	71.7	$	22.1
Compania Perforadora Mexico S.A.P.I. de C.V and affiliates	0.4		0.4
Grupo Mexico	0.1		—
MGE	64.3		75.5
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.7		0.6
Total sales	$	137.2	$	98.6

Companies with relationship to 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, 2015 and 2014 (in millions):

Mextransport:	2015		2014
Purchase activity	$	1.1	$	2.1
Sales activity	$	0.3	$	0.2

Companies with relationship to SCC executive officers' families

Related party transactions

Purchase activity 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, 2015 and 2014 (in millions):

	2015		2014
Breaker	$	3.8	$	5.7
Higher Technology S.A.C.	1.1		2.1
Pigoba S.A. de C.V.	—		0.4
Sempertrans and affiliates	0.5		0.9
Servicios y Fabricaciones Mecanicas S.A.C.	0.5		1.1
Total purchases	$	5.9	$	10.2