American Stock Exchange News Release

Equity Release
Media Contact: Bari Trontz
American Stock Exchange
212-306-8964/bari.trontz@amex.com

AMERICAN STOCK EXCHANGE LISTS COMMON STOCK OF POLYMET MINING CORPORATION

New York, June 26, 2006 -  The American Stock Exchange (Amex) today listed the common stock of PolyMet Mining Corporation under the ticker symbol PLM.

PolyMet Mining Corp. is a mine development company that owns 100% of the NorthMet copper-nickel-platinum group metal deposit and 100% of a large processing facility located approximately six miles from the deposit in the established mining district of the Mesabi Iron Range in northeastern Minnesota.

"We proudly welcome PolyMet Mining Corp. to the American Stock Exchange," said John McGonegal, senior vice president of Amex's equities group. "Many new mining companies have chosen to list at the Amex this year, and we are pleased that PolyMet is the latest company to recognize our expanding presence in this important sector."

"This is another important milestone in the development of our company," said William Murray, President and Chief Executive Officer. "We are honored to be listed on the Amex and believe that this will provide our shareholders with greater liquidity and better market access, and will assist us in our continuing program to increase investor awareness, especially in the U.S."

The specialist for PolyMet Mining Corp. will be Kellogg Capital Group. For further information on PLM and other Amex-listed companies, please visit www.amex.com.

About American Stock Exchange

The American Stock Exchange® (Amex®) is the only primary exchange that offers trading across a full range of equities, options and exchange traded funds (ETFs), including structured products and HOLDRSSM. In addition to its role as a national equities market, the Amex is the pioneer of the ETF, responsible for bringing the first domestic product to market in 1993. Leading the industry in ETF listings, the Amex lists 183 ETFs to date. The Amex is also one of the largest options exchanges in the U.S., trading options on broad-based and sector indexes as well as domestic and foreign stocks.