Document:

EX-4.5

Exhibit 4.5

Consent of Dr. Mark O’Dea

     I, Dr. Mark O’Dea, hereby confirm that I have read the Notice of Meeting and Management
Information Circular of Aurora Energy Resources Inc. (“Aurora”) dated March 20, 2009 (the
“Circular”) relating to the special meeting of shareholders of Aurora to approve the amalgamation
of Aurora and 59801 Newfoundland & Labrador Inc., which Circular incorporates by reference the
annual information form of Fronteer Development Group Inc. (“Fronteer”) dated March 27, 2008 for
its year ended December 31, 2007 (the “AIF”).

     I hereby consent to the use of my name in connection with references to my preparation or
involvement in the preparation of the technical report dated November 20, 2007 entitled “An Update
on the Exploration Activities of Aurora Energy Resources Inc. on the CMB Uranium Property,
Labrador, Canada, During the Period January 1, 2007 to October 31, 2007” prepared together with
Gary Giroux, Dr. D.H.C. Wilton, Jim Lincoln, Christopher Lee and Ian Cunningham-Dunlop (the
“Technical Report”) in the AIF or other documents incorporated by reference therein. I further
consent to the inclusion in the Circular and Fronteer’s registration statement on Form F-8 relating
to the Circular filed with the United States Securities and Exchange Commission (the “Registration
Statement”) of the Technical Report (through the inclusion by way of incorporation by reference of
the AIF in the Circular) and of extracts from or a summary of the Technical Report in the Circular
and the Registration Statement or any documents incorporated by reference therein.

     I also hereby confirm that I have read the Technical Report and extracts from or a summary of
the Technical Report contained in the Circular and the Registration Statement by way of
incorporation by reference of the AIF and that I have no reason to believe there are any
misrepresentations in the information contained therein that is derived from the Technical Report
or that is within my knowledge as a result of the services that I have performed in connection with
the Technical Report.

	 	 	 	 	 
	March 20, 2009

	 	(signed) Dr. Mark O’Dea
 

Dr. Mark O’Dea, P.Geo.EX-4.6

Exhibit 4.6

Consent of Jim Lincoln

     I, Jim Lincoln, hereby confirm that I have read the Notice of Meeting and Management
Information Circular of Aurora Energy Resources Inc. (“Aurora”) dated March 20, 2009 (the
“Circular”) relating to the special meeting of shareholders of Aurora to approve the amalgamation
of Aurora and 59801 Newfoundland & Labrador Inc., which Circular incorporates by reference the
annual information form of Fronteer Development Group Inc. (“Fronteer”) dated March 27, 2008 for
its year ended December 31, 2007 (the “AIF”).

     I hereby consent to the use of my name in connection with references to my preparation or
involvement in the preparation of the technical report dated November 20, 2007 entitled “An Update
on the Exploration Activities of Aurora Energy Resources Inc. on the CMB Uranium Property,
Labrador, Canada, During the Period January 1, 2007 to October 31, 2007” prepared together with
Gary Giroux, Dr. D.H.C. Wilton, Mark O’Dea, Christopher Lee and Ian Cunningham-Dunlop (the
“Technical Report”) in the AIF or other documents incorporated by reference therein. I further
consent to the inclusion in the Circular and Fronteer’s registration statement on Form F-8 relating
to the Circular filed with the United States Securities and Exchange Commission (the “Registration
Statement”) of the Technical Report (through the inclusion by way of incorporation by reference of
the AIF in the Circular) and of extracts from or a summary of the Technical Report in the Circular
and the Registration Statement or any documents incorporated by reference therein.

     I also hereby confirm that I have read the Technical Report and extracts from or a summary of
the Technical Report contained in the Circular and the Registration Statement by way of
incorporation by reference of the AIF and that I have no reason to believe there are any
misrepresentations in the information contained therein that is derived from the Technical Report
or that is within my knowledge as a result of the services that I have performed in connection with
the Technical Report.

	 	 	 
	March 20, 2009

	 	(signed) Jim Lincoln
	 

	 	 
	 

	 	Jim Lincoln, P.Eng.EX-4.7

Exhibit 4.7

Consent of Peter Grieve

     I, Peter Grieve, hereby confirm that I have read the Notice of Meeting and Management
Information Circular of Aurora Energy Resources Inc. (“Aurora”) dated March 20, 2009 (the
“Circular”) relating to the special meeting of shareholders of Aurora to approve the amalgamation
of Aurora and 59801 Newfoundland & Labrador Inc., which Circular incorporates by reference the
annual information form of Fronteer Development Group Inc. (“Fronteer”) dated March 27, 2008 for
its year ended December 31, 2007 (the “AIF”).

     I hereby consent to the use of my name in connection with references to my preparation or
involvement in the preparation of the technical report dated March 30, 2007 entitled “Technical
Report on the Pirentepe and Halilaga Exploration Properties, Çanakkale, Western Anatolia, Turkey”
(the “Technical Report”) in the AIF or other documents incorporated by reference therein. I further
consent to the inclusion in the Circular and Fronteer’s registration statement on Form F-8 relating
to the Circular filed with the United States Securities and Exchange Commission (the “Registration
Statement”) of the Technical Report (through the inclusion by way of incorporation by reference of
the AIF in the Circular) and of extracts from or a summary of the Technical Report in the Circular
and the Registration Statement or any documents incorporated by reference therein.

     I also hereby confirm that I have read the Technical Report and extracts from or a summary of
the Technical Report contained in the Circular and the Registration Statement by way of
incorporation by reference of the AIF and that I have no reason to believe there are any
misrepresentations in the information contained therein that is derived from the Technical Report
or that is within my knowledge as a result of the services that I have performed in connection with
the Technical Report.

	 	 	 	 	 
	March 20, 2009

	 	(signed) Peter Grieve
 

Peter Grieve, M.Sc., M.A.I.G.EX-4.8

Exhibit 4.8

Consent of Michael M. Gustin

     I, Michael M. Gustin, hereby confirm that I have read those portions of the Notice of Meeting
and Management Information Circular of Aurora Energy Resources Inc. (“Aurora”), dated March 20,
2009 (the “Circular”) and relating to the special meeting of shareholders of Aurora to approve the
amalgamation of Aurora and 59801 Newfoundland & Labrador Inc., which Circular incorporates by
reference the annual information form of Fronteer Development Group Inc. (“Fronteer”) dated March
27, 2008 for its year ended December 31, 2007 (the “AIF”), that directly pertain to the Technical
Reports (as defined in the following paragraph).

     I hereby consent to the use of my name in connection with references to my preparation or
involvement in the preparation of the following technical reports in the AIF or other documents
incorporated by reference therein: (i) the technical report dated November 1, 2007 entitled
“Updated Technical Report, Sandman Gold Project, Humbolt County, Nevada, USA” prepared together
with George Lanier and Jim Ashton, (ii) the technical report dated May 31, 2007 entitled “Updated
Technical Report, Sandman Gold Project, Humboldt County, Nevada, USA” prepared together with George
Lanier and Jim Ashton, (iii) the technical report dated November 1, 2007 entitled “Updated
Technical Report Northumberland Project, Nye County, Nevada, USA” prepared together with George
Lanier and Steven Ristorcelli, and (iv) the technical report dated July 15, 2006 entitled
“Technical Report Northumberland Project, Nye County, Nevada, USA” prepared together with George
Lanier and Steven Ristorcelli (collectively, the “Technical Reports”). I further consent to the
inclusion in the Circular and Fronteer’s registration statement on Form F-8 relating to the
Circular filed with the United States Securities and Exchange Commission (the “Registration
Statement”) of the Technical Reports (through the inclusion by way of incorporation by reference of
the AIF in the Circular) and of extracts from or a summary of the Technical Reports in the Circular
and the Registration Statement or any documents incorporated by reference therein.

     I also hereby confirm that I have read the Technical Reports and extracts from or a summary of
the Technical Reports contained in the Circular and the Registration Statement by way of
incorporation by reference of the AIF and that I have no reason to believe there are any
misrepresentations in the information contained therein that is derived from the Technical Reports
or that is within my knowledge as a result of the services that I have performed in connection with
the Technical Reports.

	 	 	 	 	 
	March 20, 2009

	 	(signed) Michael M. Gustin
 

Michael M. Gustin, R.P.Geo.EX-4.9

Exhibit 4.9

Consent of George Lanier

     I, George Lanier, hereby confirm that I have read the Notice of Meeting and Management
Information Circular of Aurora Energy Resources Inc. (“Aurora”) dated March 20, 2009 (the
“Circular”) relating to the special meeting of shareholders of Aurora to approve the amalgamation
of Aurora and 59801 Newfoundland & Labrador Inc., which Circular incorporates by reference the
annual information form of Fronteer Development Group Inc. (“Fronteer”) dated March 27, 2008 for
its year ended December 31, 2007 (the “AIF”).

     I hereby consent to the use of my name in connection with references to my preparation or
involvement in the preparation of the following technical reports in the AIF or other documents
incorporated by reference therein: (i) the technical report dated November 1, 2007 entitled
“Updated Technical Report, Sandman Gold Project, Humbolt County, Nevada, USA” prepared together
with Michael M. Gustin and Jim Ashton, (ii) the technical report dated May 31, 2007 entitled
“Updated Technical Report, Sandman Gold Project, Humboldt County, Nevada, USA” prepared together
with Michael M. Gustin and Jim Ashton, (iii) the technical report dated November 1, 2007 entitled
“Updated Technical Report Northumberland Project, Nye County, Nevada, USA” prepared together with
Michael M. Gustin and Steven Ristorcelli, and (iv) the technical report dated July 15, 2006
entitled “Technical Report Northumberland Project, Nye County, Nevada, USA” prepared together with
Michael M. Gustin and Steven Ristorcelli (collectively, the “Technical Reports”). I further consent
to the inclusion in the Circular and Fronteer’s registration statement on Form F-8 filed with the
United States Securities and Exchange Commission (the “Registration Statement”) of the Technical
Reports (through the inclusion by way of incorporation by reference of the AIF in the Circular) and
of extracts from or a summary of the Technical Reports in the Circular and the Registration
Statement or any documents incorporated by reference therein.

     I also hereby confirm that I have read the Technical Reports and extracts from or a summary of
the Technical Reports contained in the Circular and the Registration Statement by way of
incorporation by reference of the AIF and that I have no reason to believe there are any
misrepresentations in the information contained therein that is derived from the Technical Reports
or that is within my knowledge as a result of the services that I have performed in connection with
the Technical Reports.

	 	 	 	 	 
	March 20, 2009

	 	(signed) George Lanier
 

George Lanier

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