December 24, 2008

Hoyt Lakes, Minnesota, December 24, 2008 – PolyMet Mining Corp. (TSX: POM; NYSE-A: PLM) (the “Company”) announced today that it has drawn the second tranche (the “Tranche B Debenture”) of $7.5 million under the $50 million convertible debt facility with Glencore AG, which closed on October 31, 2008.

The floating rate secured debentures due on September 30, 2011 (the “Debentures”) have been issued by the Company’s wholly-owned Minnesota subsidiary, Poly Met Mining, Inc. (the “Issuer”), and guaranteed by the Company. The Debentures bear interest at 12-month US dollar LIBOR (currently 2.08%) plus 4%. The Debentures are exchangeable into common shares of the Company at US$4.00 per share.

As part of the $50 million convertible debt facility, the Company previously issued to Glencore AG warrants to purchase 6,250,000 common shares of the Company, currently exercisable at US$5.00 per share. Upon exchange of the Tranche A Debenture issued on October 31, 2008 and the Tranche B Debenture, together with exercise of these warrants, Glencore AG would own 10,000,000 shares of the Company, representing approximately 6.8% of the Company’s issued capital on a partially-diluted basis.

The funds borrowed by the Issuer will be used to complete critical engineering work and the final Environmental Impact Study for the Company’s NorthMet project.

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About PolyMet

PolyMet Mining Corp. ( is a publicly-traded mine development company that controls 100% of the NorthMet copper-nickel-precious metals ore body through a long-term lease and owns 100% of the Erie Plant, a large processing facility located approximately six miles from the ore body in the established mining district of the Mesabi Range in northeastern Minnesota. PolyMet Mining Corp. has completed its Definitive Feasibility Study and is seeking environmental and operating permits to enable it to commence production. The NorthMet project is expected to require approximately one million man hours of construction labor and create at least 400 long-term jobs, a level of activity that will have a significant multiplier effect in the local economy.

About Glencore

Glencore International AG, based in Baar, Switzerland, is a leading privately held, diversified natural resources company with worldwide activities in the smelting, refining, mining, processing, purchasing, selling and marketing of metals and minerals, energy products and agricultural products.

Glencore AG is a subsidiary of Glencore International AG. Glencore AG, which maintains offices in Stamford, Connecticut, has purchased the debentures from the Issuer and the warrants from the Company in the ordinary course of its business. Glencore AG may from time to time acquire additional securities of the Issuer and/or the Company, dispose of some or all of the existing or additional securities it holds or will hold, or may continue to hold its then current position.

Persons who wish to obtain a copy of the Early Warning Report filed in connection with this transaction may obtain a copy of such report from or by contacting the person(s) listed below.


Per: “Joe Scipioni”

Joe Scipioni, President

For further information, please contact:

William Murray
Executive Chairman
+1 (604) 669-4701

Joe Scipioni
President & Chief Executive Officer
+1 (218) 225-4417

Douglas Newby
Chief Financial Officer
+1 (646) 879-5970

LaTisha Gietzen
VP Public, Governmental and Environmental Affairs
+1(218) 225-4417


Marc Ocskay
Glencore International AG
Tel: +41 41 709 2000
Fax: +41 41 709 3000

This news release contains certain forward-looking statements concerning anticipated developments in PolyMet’s operations in the future. Forward-looking statements are frequently, but not always, identified by words such as “expects,” “anticipates,” “believes,” “intends,” “estimates,” “potential,” “possible,” and similar expressions, or statements that events, conditions or results “will,” “may,” “could,” or “should” occur or be achieved. These forward-looking statements may include statements regarding exploration results and budgets, reserve estimates, mineral resource estimates, work programs, capital expenditures, timelines including timelines for third-party studies and issuance of permits to operate by various government agencies, strategic plans, the market price of metals, costs, or other statements that are not a statement of fact. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements due to a variety of risks, uncertainties and other factors. PolyMet’s forward-looking statements are based on the beliefs, expectations and opinions of management on the date the statements are made, and PolyMet does not assume any obligation to update forward-looking statements if circumstances or management’s beliefs, expectations and opinions should change.

Specific reference is made to PolyMet’s most recent Form 20-F/Annual Information Form on file with the SEC and Canadian securities authorities for a discussion of some of the risk factors and other considerations underlying forward-looking statements.

The TSX has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.

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