JOINT FILING AGREEMENT
EXHIBIT 1
Each of the undersigned hereby agrees that this 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: September 28, 2012
| Glencore AG | |||
| By: | /s/ Xxxxxxx Xxxxxxx | ||
| Name: | Xxxxxxx Xxxxxxx | ||
| Title: | Director | ||
| By: | /s/ Xxxxxx Xxxxx | ||
| Name: | Xxxxxx Xxxxx | ||
| Title: | Officer | ||
| Glencore International AG | |||
| By: | /s/ Xxxxxxx Xxxxxxx | ||
| Name: | Xxxxxxx Xxxxxxx | ||
| Title: | Director | ||
| By: | /s/ Xxxxx Xxxxxxxx | ||
| Name: | Xxxxx Xxxxxxxx | ||
| Title: | Officer | ||
| Glencore International plc | |||
| By: | /s/ Xxxxxx Xxxxxx | ||
| Name: | Xxxxxx Xxxxxx | ||
| Title: | Director | ||
| Sopak AG | |||
| By: | /s/ Xxxxxxx Xxxxxxx | ||
| Name: | Xxxxxxx Xxxxxxx | ||
| Title: | Chairman | ||
| By: | /s/ Xxxxxx Xxxxx | ||
| Name: | Xxxxxx Xxxxx | ||
| Title: | Member | ||
