	Exhibit 99.7
AMC Mining Consultants (Canada) Ltd BC0767129 Suite 1330, 200 Granville Street Vancouver BC V6C 1S4 CANADA T +1 604 669 0044 F+1 604 669 1120 E amccanada@amcconsultants.ca

VIA COURIER/FACSIMILE
Alberta Securities Commission
British Columbia Securities Commission
New Brunswick Securities Commission
Nova Scotia Securities Commission
Ontario Securities Commission
Prince Edward Island Securities Office
Saskatchewan Financial Services Commission, Securities Division
Securities Commission of Newfoundland and Labrador
The Manitoba Securities Commission
Registrar of Securities, Government of Northwest Territories
Registrar of Securities, Government of Nunavut
Registrar of Securities, Government of the Yukon Territory
United States Securities and Exchange Commission
Northgate Minerals Corporation

Dear Sirs/Mesdames :

Re:	Northgate Mineral Corporation (“Northgate”).
	Consent of Qualified Person

I, Michael J Thomas, consent to the public filing of the technical report titled “Preliminary Economic Assessment of the Kemess Underground Project British Columbia, Canada” dated July 22, 2011 (the “Technical Report”) by Northgate.

I also consent to any extracts from or a summary of the Technical Report in the news release of Northgate, dated August 2, 2011 (the “News Release”).

I certify that I have read the News Release, dated August 2, 2011 filed by Northgate and that it fairly and accurately represents the information in the sections of the technical report for which I am responsible.

Dated this 8th day of September, 2011.

(signed) Michael J. Thomas		Signature of Qualified Person (Seal or Stamp)
Michael J Thomas		Print name of Qualified Person

ADELAIDE	BRISBANE	MELBOURNE	PERTH	UNITED KINGDOM	VANCOUVER
+61 8 8201 1800	+61 7 3839 0099	+61 3 8601 3300	+61 8 6330 1100	+44 1628 778 256	+1 604 669 0044

www.amcconsultants.ca

Northgate Minerals CORP 6-K