EX-99.1 2 tv481502_ex99-1.htm EXHIBIT 99.1

EXHIBIT 99.1

JOINT FILING AGREEMENT

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/ Andreas Hubmann
	Name:	Andreas Hubmann
	Title:	Director
	By:	/s/ David Streule
	Name:	David Streule
	Title:	Officer

	Glencore International AG
	By:	/s/ Peter Friedli
	Name:	Peter Friedli
	Title:	Officer
	By:	/s/ Robin Scheiner
	Name:	Robin Scheiner
	Title:	Officer

	Glencore plc
	By:	/s/ Ivan Glasenberg
	Name:	Ivan Glasenberg
	Title:	Chief Executive Officer