Exhibit 99.1
JOINT FILING AGREEMENT
The undersigned hereby agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and that all subsequent amendments to this statement on Schedule 13G may be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements.
Dated: February 16, 2016
| ESAC HOLDINGS LLC |
| BY: ELECTRUM STRATEGIC MANAGEMENT LLC, ITS MANAGER |
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| By: | /s/ Andrew M. Shapiro |
| | Name: ANDREW M. SHAPIRO Title: MANAGING DIRECTOR |
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| ELECTRUM STRATEGIC OPPORTUNITIES FUND L.P. |
| BY: ELECTRUM STRATEGIC OPPORTUNITIES FUND GP L.P., ITS GENERAL PARTNER |
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| BY: ESOF GP LTD., ITS GENERAL PARTNER |
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| By: | /s/ Michael H. Williams |
| | Name: MICHAEL H. WILLIAMS Title: DIRECTOR |
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| ELECTRUM STRATEGIC OPPORTUNITIES FUND GP L.P. |
| BY: ESOF GP LTD., ITS GENERAL PARTNER |
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| By: | /s/ Michael H. Williams |
| | Name: MICHAEL H. WILLIAMS Title: DIRECTOR |
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| ESOF GP LTD. |
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| By: | /s/ Michael H. Williams |
| | Name: MICHAEL H. WILLIAMS Title: DIRECTOR |
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| THE ELECTRUM GROUP LLC |
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| By: | /s/ Michael H. Williams |
| | Name: MICHAEL H. WILLIAMS Title: SENIOR MANAGING DIRECTOR |
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| /s/ Thomas S. Kaplan |
| Thomas S. Kaplan |