| CUSIP No. 608754 109 | Schedule 13D | Page 9 of 9 |
The undersigned acknowledge and agree that the foregoing Amendment No. 4 to Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to such statement shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. This agreement may be included as an exhibit to such joint filing.
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| November 30, 2011. | T-II HOLDINGS LLC | |
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| | By: | /s/ Mark S. Kristoff | |
| | | Name: Mark S. Kristoff | |
| | | Title: Chief Executive Officer | |
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| | TRAXYS S.A.R.L. | |
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| | By: | T-II Holdings LLC, Member | |
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| | By: | /s/ Mark S. Kristoff | |
| | | Name: Mark S. Kristoff | |
| | | Title: Chief Executive Officer | |
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| | TNA MOLY GROUP LLC | |
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| | By: | Traxys North America LLC, Member | |
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| | By: | /s/ Mark S. Kristoff | |
| | | Name: Mark S. Kristoff | |
| | | Title: Manager | |
