Document:

Exhibit 4.19

GLOBAL GEO SERVICES (PTY) LTD

	
   

  	
   

  	
  Reg No2000/19232/07

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
  Tel :  011 956 6264

  	
   

  	
  P.O. Box 1574

  
	
   

  	
  Fax : 011 956 6264

  	
   

  	
  Rant-en-dal

  
	
   

  	
  global@ggs.co.za

  	
   

  	
  1751

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
  Professional Geoscience Services

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  

 

CONSENT

Ladies and
Gentlemen:

The undersigned
hereby consents to (1) the references to the undersigned’s name included or
incorporated by reference in the Registration Statement on Form F-80 being
filed by Uranium One Inc. under the United States Securities Act of 1933, as
amended, in connection with (a) the mineral resource estimates related to the
Modder East Project, (b) the mineral resource estimates related to the Dominion
Uranium Project and (c) mineral resources estimates related to the Dominion
Dumps and (2) all other references to the undersigned included or incorporated
by reference in such Registration Statement. 

	
  Date: June 22, 2007

  
	
   

  
	
   

  
	
  /s/ Charles Johannes Muller

  	
   

  
	
  Charles Johannes Muller

  
	
  BSc (Hons) Pr Sci NatExhibit 4.20

	
  June 25, 2007

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  British Columbia Securities Commission 

  	
   

  	
  File name

  	
   

  	
   

  
	
  Alberta Securities Commission 

  	
   

  	
   

  	
   

  	
   

  
	
  Saskatchewan Financial Services Commission,

  	
   

  	
  Direct tel

  	
   

  	
  (08) 8238 5172

  
	
   Securities
  Division 

  	
   

  	
   

  	
   

  	
   

  
	
  The Manitoba Securities Commission

  	
   

  	
  Direct fax

  	
   

  	
  (08) 8238 5001

  
	
  Ontario Securities Commission

  	
   

  	
   

  	
   

  	
   

  
	
  Autorité des Marchés Financiers du Québec

  	
   

  	
  Email

  	
   

  	
  cbazeley@mayfieldeng.com.au

  
	
  New Brunswick Securities Commission

  	
   

  	
   

  	
   

  	
   

  
	
  Nova Scotia Securities Commission

  	
   

  	
   

  	
   

  	
   

  
	
  Registrar of Securities, Prince Edward Island

  	
   

  	
   

  	
   

  	
   

  
	
  Securities Commission of Newfoundland and 

  	
   

  	
   

  	
   

  	
   

  
	
  Labrador

  	
   

  	
   

  	
   

  	
   

  
	
  Toronto Stock Exchange

  	
   

  	
   

  	
   

  	
   

  
	
  Uranium One Inc.

  	
   

  	
   

  	
   

  	
   

  
	
  Energy Metals Corporation

  	
   

  	
   

  	
   

  	
   

  

 

Re:
Consent of Mayfield

 

Ladies and Gentlemen:

The undersigned
hereby consents to (1) the references to the undersigned’s name included or
incorporated by reference in the Registration Statement on Form F-80 being
filed by Uranium One Inc. under the United States Securities Act of 1933, as
amended, in connection with the Honeymoon Uranium Project – Summary of
Feasibility Study 400 tpa U3O8 Equivalent dated July 31, 2006 and (2) all other
references to the undersigned included or incorporated by reference in such
Registration Statement.

Date: June 25,
2007

	
  

  	
   

  	
  MAYFIELD ENGINEERING

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Colin Bazeley

  
	
   

  	
   

  	
   

  
	
   

  	
  Name:

  	
  Colin Bazeley

  
	
   

  	
   

  	
   

  
	
   

  	
  Title: 

  	
  Project Manager

  

 

Mayfield Engineering Pty Limited

ABN 22 112 829 624

43-69 Sturt Street

Adelaide SA 5000

Tel +61 (08) 8238 5000

Fax +61 (08) 8238 5001

E-mail mayfield@mayfieldeng.com.au

www.mayfieldeng.com.au

 1Exhibit 4.21

	
  

  	
  KEN
  BAMPTON M.Sc,
  M.AusIMM, M.AIG

  
	
  ABN 17 998 949 266

  	
  Consulting Geologist,
  SURPAC Licencee

  

 

 

CONSENT

Ladies and Gentlemen:

The undersigned hereby
consents to (1) the references to the undersigned’s name included or
incorporated by reference in the Registration Statement on Form F-80 being
filed by Uranium One Inc. under the United States Securities Act of 1933, as
amended, in connection with the report entitled the “Honeymoon Uranium Project –
Summary of Feasibility Study 400 tpa U3O8 Equivalent” dated July 31, 2006 and
(2) all other references to the undersigned included or incorporated by
reference in such Registration Statement.

Date: June 28, 2007

	
  

  	
   

  	
  ORE RESERVE EVALUATION SERVICES

  
	
   

  	
  By: 

  	
  /s/ K.F. Bampton

  
	
   

  	
   

  	
   

  
	
   

  	
  Name:

  	
  K.F. Bampton

  
	
   

  	
   

  	
   

  
	
   

  	
  Title:

  	
  Principal

  

 

55 Knightsbridge Avenue,
VALLEY VIEW, South Australia 5093 

E-Mail: ken_bampton@msn.com.au    
Telephone & Fax: +61 8 8264 7745Exhibit 4.22

 

	
  SCOTT WILSON RPA

  	
   

  	
     www.scottwilson.com

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  Suite 388

  
	
   

  	
   

  	
  1130 W. Pender Street

  
	
   

  	
   

  	
  Vancouver, BC V6E 4A4

  
	
   

  	
   

  	
  Tel: (604) 602-6767

  
	
   

  	
   

  	
  Fax: (604) 602-0235

  
	
   

  	
   

  	
  Email:stewart.wallis@scottwilson.com

  

 

CONSENT

Ladies and Gentlemen:

The undersigned hereby consents to (1) the references
to the undersigned’s name included or incorporated by reference in the
Registration Statement on Form F-80 being filed by Uranium One Inc. under the
United States Securities Act of 1933, as amended, in connection with (a) the
report entitled the “Technical Report on the Sheep Mountain Uranium Project,
Wyoming” dated October 10, 2006, (b) the report entitled the “Kharassan
Technical Report” dated October 13, 2005, as revised March 25, 2006, (c) the
report entitled the “South Inkai Technical Report” dated October 8, as revised
March 20, 2006 and (d) the report entitled the “Akdala Technical Report” dated
October 3, 2005, revised March 3, 2006 and (2) all other references to the
undersigned included or incorporated by reference in such Registration
Statement.

Date: June 20, 2007

	
  

  	
  SCOTT WILSON ROSCOE POSTLE ASSOCIATES, INC.

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ C. Stewart Wallis P. Geo

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  Name:

  	
  C. Stewart Wallis P. GeoExhibit 4.23

 

	
  

  	
   

  	
  SRK House

  265 Oxford Road, Illovo

  2196 Johannesburg

  

  PO Box 55291

  
	
   

  	
   

  	
  Northlands

  
	
   

  	
   

  	
  2116 South Africa

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  e-Mail: johannesburg@srk.co.za

  
	
   

  	
   

  	
  URL: http://www.srk.co.za

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  Tel: +27 (11) 441 1111

  
	
   

  	
   

  	
  Fax: +27 (11) 880 8086

  
	
   

  	
   

  	
   

  
	
   

  	
  

  

 

22 June 2007

Ladies and
Gentlemen:

The undersigned
hereby consents to the references to:

(1) the
undersigned’s name included or incorporated by reference in the Registration
Statement on Form F-80 being filed by Uranium One Inc. under the United States
Securities Act of 1933, as amended, in connection with:  

(a) the report
entitled “Dominion Uranium Project, North West Province, 

Republic of South
Africa Independent Technical Report” dated March 2, 2007;

(b) the report entitled
“Dominion Uranium Project, North West Province, Republic of South Africa
Independent Technical Report” dated August 1, 2006 and amended on October 26,
2006;

(c) the report entitled
“An Independent Technical Report on the Modder East Gold Project, Located near
Springs, Gauteng Province, Republic of South Africa” dated August 31, 2006 and
amended October 26, 2006; and

(d) the report entitled
“An Independent Technical Report on the Eastern Mining Assets, Located near
Springs, Gauteng Province, Republic of South Africa” dated September 1, 2005
and amended October 20, 2005; and

(e)  mineral resource and reserve estimates for
the Modder East Project, Dominion Reefs, Dominion Dumps and Rietkuil areas, and

(2) all other
references to the undersigned included or incorporated by reference in such
Registration Statement. 

Yours faithully

	
  

  	
  /s/ Roger Dixon

  	
   

  
	
  

  	
  Roger Dixon

  
	
   

  	
  Partner

  
	
   

  	
   

  

Consent of SRK.doc

	
  

  	
   

  	
   

  	
   

  	
   

  
	
   

  

  	
   

  	
  Partners  JCJ Boshoff, MJ Braune, JM Brown, JAC
  Cowan, CD Dalgliesh, RJ Dixon, T Hart, PR Labrum, LGA Maclear,
  RRW McNeill, HAC Meintjes, BJ Middleton, MJ Morris, GP Murray, GP
  Nel, VS Reddy, PN Rosewarne, PE Schmidt, PJ Shepherd,
  AA Smithen, VM Simposya, PJ Terbrugge, KM Uderstadt, DJ
  Venter, HG Waldeck, A Wood, A J van der Merwe

  	
   

  	
  Cape Town         +27 (0) 21 409 2400

  Durban               +27 (0) 31 312 1355

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
  Directors 
  AJ
  Barrett, PR Labrum, BJ Middleton, MJ Morris, PE Schmidt, PJ Terbrugge, MB
  Zungu, S Mayekiso

  	
   

  	
   

  East London        +27 (0) 43 748 6292

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  Associates  AN Birtles, SA
  McDonald, DM Duthe, R Gardiner, WA Naismith, JP Odendaal, D Visser,
  AC White, ML Wertz, AC Woodford

  	
   

  	
   

  Harare                   +263 (4) 496 182

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
  

  	
   

  	
  Consultants  AC Burger, BSc (Hons);  IS
  Cameron-Clarke, PrSci Nat, MSc;  JH de Beer, PrSci
  Nat, MSc; GA Jones, PrEng,
  PhD;  WD Ortlepp, PrEng, MEng; TR Stacey, PrEng, DSc; OKH Steffen, PrEng, PhD; RJ Stuart, PrTech Eng,  GDE;  DW Warwick, PrSci Nat, BSc (Hons)

  	
   

  	
  Johannesburg      +27 (0) 11 441 1111

   

  Pietermaritzburg +27 (0) 33
  345 6311

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
  Corporate Shareholder:  Kagiso Enterprises (Pty) Ltd

  	
  

  	
   

  	
  Port Elizabeth     +27 (0) 41 581 1911

   

  Pretoria               +27 (0) 12 361 9821

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  SRK Consulting (South Africa) (Pty)
  Ltd

  	
  Reg No 1995.012890.07

  	
   

  	
  Rustenburg         +27 (0) 14 594 1280

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