RELATED PARTY TRANSACTIONS: (Tables)

3 Months Ended

Mar. 31, 2014

Receivable and payable balances with related parties

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

	As of
	March 31, 2014			December 31, 2013
Related parties receivable current:
Grupo Mexico and affiliates	$	0.8		$	0.8
Mexico Generadora de Energia S. de R.L. (“MGE”)	27.0			18.8
Compania Perforadora Mexico S.A.P.I. de C.V.	0.9			0.7
Compania Minera Coimolache S.A.	7.2			17.2
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	1.6			0.6
	$	37.5		$	38.1

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

Related parties payable:
Grupo Mexico and affiliates	$		4.1	$		3.3
MGE	15.5			14.4
Asarco LLC	13.9			6.2
Higher Technology S.A.C.	0.1			0.1
Breaker S.A. de C.V and affiliates (“Breaker”)	0.3			0.3
Sempertrans and affiliates	—			0.1
Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)	0.2			0.6
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.4			—
Ferrocarril Mexicano S.A. de C.V.	5.0			3.3
	$		39.5	$		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 sale activities with Grupo Mexico and its affiliates in the three months ended March 31, 2014 and 2013 (in millions):

	As of March 31,
	2014		2013
Purchase activity
Grupo Mexico and affiliates	$	3.5	$	3.5
Asarco LLC.	15.1		32.9
Ferrocarril Mexicano S.A de C.V.	5.3		5.8
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	47.2		9.3
MGE	48.9		—
Cia Perforadora Mexico S.A.P.I. de C.V and affiliates	1.2		0.6
Total Purchases	$	121.2	$	52.1

Sales activity
Asarco LLC	$	—	$	36.6
Mexico Proyectos y Desarrollos, S.A. de C.V.	0.2		0.2
Cia Perforadora Mexico S.A.P.I. de C.V and affiliates	0.1		0.1
MGE	24.3		0.1
Total Sales	$	24.6	$	37.0

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 three months ended March 31, 2014 and 2013 (in millions):

	As of March 31,
	2014		2013
Mextransport:

Purchase activity	$	0.6	$	0.6

Sales activity	$	0.1	$	0.1

Companies with relationship to SCC executive officers' families

Related party transactions

Purchase activity with related parties

The following table summarizes the purchase activity with companies with relationships to SCC executive officers´ families in the three months ended March 31, 2014 and 2013 (in millions):

	As of March 31,
	2014		2013
Higher Technology S.A.C.	$	0.3	$	0.3
Servicios y Fabricaciones Mecanicas S.A.C.	0.3		0.1
Sempertrans France Belting Technology	0.3		0.1
Breaker	0.9		0.8
Total purchases	$	1.8	$	1.3

Equity investment in affiliate

Related party transactions

Schedule of conditions and balance of the loan granted to related party

Conditions and balance of the loan as of March 31, 2014 are as follows (in millions):

	Loan
Total loan granted	$	56.6
Interest rate	6 months Libor + 3% (approximately 3.35)%
Remaining balance at March 31, 2014	$	7.2

	Three months ended
	March 31,
	2014		2013
Interest earned	$	0.1	$	0.4