Accession Letter, dated April 5, 2011



 Exhibit 4.41.6 
 Translation into English for the benefit of Wilmington Trust 
 Monterrey,
Nuevo León, April 5, 2011 
 Banco Nacional de México, S.A., 
 Integrante del Grupo Financiero Banamex, 
 División Fiduciaria 

Calzada del Valle No. 350 Oriente 
 1er.
Piso 
 Col. Del Valle 
 San Pedro Garza
García, Nuevo León 66220 
 Mexico 
 Attention: Nelly Wing 
 Wilmington Trust (London) Limited 

6 Broad Street Place 
 Fifth Floor 

London EC2M 7JH 
 United Kingdom 

Attention: Elaine K. Lockhart 
 Reference is made to the Irrevocable Security Trust Agreement in Respect of Stock No. F/111388-5, dated September 3, 2009, as amended from time to time (the “Agreement”), entered
into among CEMEX, S.A.B. de C.V. (“CEMEX SAB”), Empresas Tolteca de México, S.A. de C.V. (“Tolteca”), Impra Café, S.A. de C.V. (“Impra Café”), Interamerican Investments, Inc.
(“Interamerican”), CEMEX México, S.A. de C.V. (“CEMEX México”), and Centro Distribuidor de Cemento, S.A. de C.V. (“Cedice”), as settlors (CEMEX SAB, Tolteca, Impra Café,
Interamerican, CEMEX México and Cedice, together, the “Settlors”); CEMEX México, Cedice, Mexcement Holdings, S.A. de C.V. (“Mexcement”) and Corporación Gouda, S.A. de C.V.
(“Gouda”), as issuers (CEMEX México, Cedice, Mexcement and Gouda, together, the “Issuers”); Banco Nacional de México, S.A., Integrante del Grupo Financiero Banamex, División Fiduciaria, in its
capacity as trustee (the “Trustee”); and Wilmington Trust (London) Limited, on its own behalf and in its capacity as Security Agent, for the benefit of the Participating Creditors, the Refinancing Creditors (and their respective
successors and assigns) and the other Secured Parties (the “Beneficiary”). Unless otherwise defined herein, capitalized terms defined in the Agreement, are used herein as therein defined. 

On April 5, 2011, CEMEX, S.A.B. de C.V. issued U.S.$800,000,000 floating rate senior secured notes due September 30 2015 ,
guaranteed by CEMEX México, CEMEX España, S.A. and New Sunward Holding B.V. (together, the “Additional Notes”). Because the purpose of the Additional Notes is to refinance existing indebtedness and, as a consequence
thereof, the Additional Notes will be part of the Refinancing Debt and the holders of the Additional Notes will be a Refinancing Party, in both cases pursuant to the Agreement, by means of this letter the Settlors and the Issuers hereby inform the
Trustee and the Beneficiary, and confirm, that the Additional Notes are secured in accordance with the terms provided in the Agreement, and are part of the Secured Obligations and the holders of the Additional Notes are Secured Parties. 







 We appreciate you acknowledging receipt of this letter, by signing in the space provided
below. 
  

			
	CEMEX, S.A.B. de C.V.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact
	
	Empresas Tolteca de México, S.A. de C.V.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact
	
	Impra Café, S.A. de C.V.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact
	
	Interamerican Investments, Inc.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact
	
	Cemex México, S.A. de C.V.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact
	
	Centro Distribuidor de Cemento, S.A. de C.V.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact
	
	Mexcement Holdings, S.A. de C.V.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact


  
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	Corporación Gouda, S.A. de C.V.
		
	By	 	 /s/ Roger Saldaña

		 	Name: Roger Saldaña
		 	Title: Attorney-in-Fact
	
	Acknowledgment of receipt:
	
	Banco Nacional de México, S.A.,
	 Integrante del Grupo Financiero Banamex,

	 División Fiduciaria

		
	By	 	 /s/ Elva Nelly Wing

		 	Name: Elva Nelly Wing
		 	Title: Trust Delegate
		 	Date:
	
	Wilmington Trust (London) Limited
		
	By	 	 /s/ Elaine Lockhart

		 	Name: Elaine Lockhart
		 	Title: Director
		 	Date: 6/4/2011


  
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