RELATED PARTY TRANSACTIONS: (Tables)

9 Months Ended

Sep. 30, 2016

Schedule of receivable and payable balances with related parties

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

	At September 30, 2016		At December 31, 2015
Related parties receivable current:
Asarco LLC	$	7.7	$	—
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates	1.3		0.7
Ferrocarril Mexicano S.A. de C.V.	—		0.2
Grupo Mexico	4.9		0.6
Mexico Generadora de Energia S. de R.L. (“MGE”)	25.3		13.9
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	1.2		0.3
Operadora de Generadoras de Energia Mexico S.A. de C.V.	—		0.1
Operadora de Cinemas S.A. de C.V.	0.2		—

	$	40.6	$	15.8


Related parties receivable non-current:
MGE	$	—	$	111.2


Related parties payable:
Asarco LLC	$	37.8	$	20.6
Eolica El Retiro, S.A.P.I. de C.V.	0.1		0.1
Ferrocarril Mexicano S.A. de C.V.	0.1		—
Grupo Mexico	1.4		12.0
MGE	18.4		23.0
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	9.8		11.8
Boutique Bowling de Mexico S.A. de C.V.	—		0.2
Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)	1.0		0.5
Operadora de Cinemas S.A. de C.V.	0.3		0.2
Breaker S.A. de C.V. and affiliates (“Breaker”)	0.3		0.3
Higher Technology S.A.C.	0.6		—
Servicios y Fabricaciones Mecanicas S.A.C.	0.2
Sempertrans and affiliates	—		0.6

	$	70.0	$	69.3

Grupo Mexico and affiliates

RELATED PARTY TRANSACTIONS:

Schedule of 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, 2016 and 2015 (in millions):

	2016		2015
Purchase activity
Asarco LLC	$	26.9	$	23.9
Compania Perforadora Mexico S.A.P.I. de C.V and affiliates	—		0.3
Eolica El Retiro, S.A.P.I. de C.V.	0.8		7.1
Ferrocarril Mexicano S.A de C.V.	33.9		17.8
Grupo Mexico	15.0		10.4
MGE	171.3		97.1
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	47.1		44.2

Total purchases	$	295.0	$	200.8


Sales activity
Asarco LLC	$	37.0	$	71.7
Compania Perforadora Mexico S.A.P.I. de C.V and affiliates	0.5		0.4
Grupo Mexico	0.6		0.1
MGE	72.6		64.3
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.3		0.7

Total sales	$	111.0	$	137.2

Companies with relationship to the controlling group

RELATED PARTY TRANSACTIONS:

Schedule of 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, 2016 and 2015 (in millions):

	2016		2015
Purchase activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.3	$	—
Mextransport	1.5		1.1
Operadora de Cinemas S.A. de C.V.	0.5		—

Total purchases	$	2.3	$	1.1


Sales activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.2	$	—
Mextransport	0.4		0.3
Operadora de Cinemas S.A. de C.V.	0.1		—

Total sales	$	0.7	$	0.3

Companies with relationship to SCC executive officers' families

RELATED PARTY TRANSACTIONS:

Schedule of purchase activity with related parties

The following table summarizes the purchase activities with companies with relationships to SCC executive officers in the nine months ended September 30, 2016 and 2015 (in millions):

	2016		2015
Breaker	$	0.5	$	3.8
Higher Technology S.A.C.	1.0		1.1
Pigoba S.A. de C.V.	0.1		—
Sempertrans and affiliates	—		0.5
Servicios y Fabricaciones Mecanicas S.A.C.	0.4		0.5

Total purchases	$	2.0	$	5.9