Polymet Mining (PLM)

Filed: 21 Apr 13, 8:00pm

Exhibit 13.1

Pursuant to 18 United States Code § 1350
As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

     The undersigned hereby certify that the Annual Report on Form 20-F for the fiscal year ended January 31, 2013 of PolyMet Mining Corp. (the “Company”) filed with the Securities and Exchange Commission on the date hereof fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: April 22, 2013/s/ Jonathan Cherry
 Name: Jonathan Cherry
 Title: Chief Executive Officer (Principal Executive
Date: April 22, 2013/s/ Douglas Newby
 Name: Douglas Newby
 Title: Chief Financial Officer (Principal Financial Officer)