February 15, 2008

Hoyt Lakes, Minnesota, February 15, 2008 – PolyMet Mining Corp. (TSX: POM; AMEX: PLM) (“PolyMet” or the “Company”) reported today that the State of Minnesota Department of Natural Resources (“MDNR”) has advised that it will not complete the Draft Environmental Impact Statement (“DEIS”) for PolyMet’s project by the end of the first quarter 2008. PolyMet’s project comprises the NorthMet copper-nickel-precious metals ore-body and the nearby Erie Plant, located near Hoyt Lakes in the established mining district of the Mesabi Iron Range in northeastern Minnesota.

In order to make the draft EIS as thorough and complete as possible, extra time is being taken by the MDNR to validate and verify sampling, monitoring, and modeling data. The MDNR anticipates the validation and drafting of the draft EIS will be completed before the end of the second quarter of 2008.

“The EIS process is complicated, difficult and at times frustrating, but significant progress is being made toward completion,” stated LaTisha Gietzen Vice President of Public, Government, and Environmental Affairs for PolyMet.

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PolyMet Mining Corp. (www.polymetmining.com) 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 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 has completed its Definitive Feasibility Study and is seeking environmental and operating permits to enable it to commence production in the second half of 2009. 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.


Per: “Joe Scipioni”


Joe Scipioni, President
For further information, please contact:
William Murray
+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

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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