EX-99.1 2 v242087_ex99-1.htm EXHIBIT 99.1 Unassociated Document
 
 
EXHIBIT 99.1
 
JOINT FILING AGREEMENT
 
Each of the undersigned hereby agrees that this Amendment No. 10 to the statement on Schedule 13D is being filed with the United States Securities and Exchange Commission on behalf of each of the undersigned pursuant to Rule 13d-1(k) under the United States Securities Exchange Act of 1934, as amended.

Dated:  December 6, 2011
 
 
Glencore AG
  
       
 
By:
/s/ Andreas Hubmann 
  
       
 
Name:
Andreas Hubmann 
  
       
 
Title:
Director
  
       
 
By:
/s/ Barbara Bodmer 
  
       
 
Name:
Barbara Bodmer 
  
       
 
Title:
Officer
  
 
 
Glencore International AG
  
       
 
By:
/s/ Andreas Hubmann 
  
       
 
Name:
Andreas Hubmann 
  
       
 
Title:
Director
  
       
 
By:
/s/ Barbara Bodmer 
  
       
 
Name:
Barbara Bodmer 
  
       
 
Title:
Officer
  
 
 
Glencore International plc
  
       
 
By:
/s/ Steven Kalmin
  
       
 
Name:
Steven Kalmin
  
       
 
Title:
Director