JOINT FILING AGREEMENT
EXHIBIT 99.1
Each of the undersigned hereby agrees that this Amendment No. 22 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.
Date: December 15, 2017
Glencore AG | |||
By: | /s/ Xxxxxxx Xxxxxxx | ||
Name: | Xxxxxxx Xxxxxxx | ||
Title: | Director | ||
By: | /s/ Xxxxx Xxxxxxx | ||
Name: | Xxxxx Xxxxxxx | ||
Title: | Officer |
Glencore International AG | |||
By: | /s/ Xxxxx Xxxxxxx | ||
Name: | Xxxxx Xxxxxxx | ||
Title: | Officer | ||
By: | /s/ Xxxxx Xxxxxxxx | ||
Name: | Xxxxx Xxxxxxxx | ||
Title: | Officer |
Glencore plc | |||
By: | /s/ Xxxx Xxxxxxxxxx | ||
Name: | Xxxx Xxxxxxxxxx | ||
Title: | Chief Executive Officer |