EX-99.1 2 v138743_ex99-1.htm Unassociated Document
 
EXHIBIT 1
JOINT FILING AGREEMENT
 
Each of the undersigned hereby agrees that this Amendment No. 6 to the statement on Schedule 13D is being filed with the Securities and Exchange Commission on behalf of each of the undersigned pursuant to Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.
 
Dated:  February 3, 2009
 
Glencore Investment Pty Ltd
 
By:           /s/     Valarie A. Hing                                                      
Name:    Valarie A. Hing
Title:      Attorney-in-Fact
 
Glencore Investments AG
 
By:            /s/     Valarie A. Hing                                                      
Name: Valarie A. Hing
Title:    Attorney-in-Fact
 
Glencore International AG
 
By:          /s/     Valarie A. Hing                                                      
Name:   Valarie A. Hing
Title:     Attorney-in-Fact
 
Glencore Holding AG
 
By:          /s/     Valarie A. Hing                                                      
Name:   Valarie A. Hing
Title:     Attorney-in-Fact