Document:

Exhibit 4.16

		
	MICON

	Exhibit 4.16

	International Limited

	 

IAN R. WARD, P.ENG

As an author of this report, I, Ian R. Ward do hereby certify that:

1.

I am employed as the President and Principal Metallurgist by, and carried out this assignment for:  Micon International Limited, Suite 900, 390 Bay Street, Toronto, Ontario M5H 2Y2, tel (416) 362-5135 fax (416) 362-5763.

2.

This certificate applies to the technical report titled “Las Crucitas Gold Project, N1 43-101 Technical Report Summary of the Bankable Feasibility Study and Addendum Report” dated February 2007, prepared for Industrias Infinito S.A. and Vannessa Ventures Ltd.

3.

I hold the following academic qualifications:

B.Sc. (Hons) Minerals Engineering, The University of Birmingham, U.K. 1968

4.

I am a registered Professional Engineer of Ontario (membership number 48869010); as well, I am a member in good standing of the Canadian Institute of Mining, Metallurgy and Petroleum;

5.

I have worked as a metallurgist in the minerals industry and in consulting engineering companies for the last 39 years.  My work experience includes the management of technical and feasibility studies, management of metallurgical testwork programs and the design of numerous mineral processing plants;

6.

I am familiar with N1 43-101 and, by reason of education, experience and professional registration; I fulfill the requirements of a Qualified Person as defined in N1 43-101.

7.

I have not visited the property which is the subject of this report;

8.

I managed the preparation by Micon of the detailed Feasibility Study of the project and the subsequent Addendum Study, and I am responsible for Sections 16, 18.2, 18.8, 18.9, 18.10, 18.11, 18.12 and portions of Section 1 of the report.  I am also responsible for Sections 18.4, 18.7, and 18.13 of the report, which incorporate information collected by Vannessa Ventures Ltd. personnel, which I have reviewed and accept; 

9.

I am independent of the parties involved in the transaction for which this report is required, other than providing consulting services; 

10.

I have no prior involvement with the property of the issuer.

11.

I have read N1-43-101 and I consider that this report has been prepared in compliance with the instrument,

12.

As of the date of this certificate, to the best of my knowledge, information and belief, the technical report contains all scientific and technical information that is required to be disclosed to make the technical report not misleading.

13.

I consent to the filing of the report with any Canadian stock exchange or securities regulatory authority, and any publication by them of the report.

Dated February 21, 2007

“Ian R. Ward”

Ian R. Ward P.Eng.

		
	MICON
	Exhibit
    4.16

	International
        Limited
	 

MANI
  VERMA, P.ENG

As the co-supervisory of this report
  entitled “Las Crucitas Gold Project Ni 43-101”, I Mani Verma do hereby
  certify that:

1.

I am an associate
  of  Micon International Limited, Suite 900, 390 Bay Street, Toronto, Ontario
  M5H 2Y2, Tel: (416) 362-5135 Fax: (416) 362-5763, e-mail  mverma@micon-international.com;

2.

I hold the following
  academic qualifications:

B.Eng.
  (Mining)

Sheffield
  University, UK 1963

M.
  Eng. (Mineral Economics)

McGill
  University 1981

3.

I am a registered
  Professional Engineer with the Professional Engineers of Ontario;  as well,
  I am a member in good standing of other technical associations and societies,
  including:

The
  Canadian Institute of Mining and Metallurgy (Toronto Branch);

4.

I have worked as
  a mining engineer in the minerals industry for over 25 years;

5.

I have read NI 43-101
  and Form 43-101 F1 and, by reason of education, experience and professional
  registration, I fulfill the requirements of a Qualified Person as defined in
  NI 43-101;

6.

This report has been
  prepared in compliance with the criteria set forth in NI 43-101 and Form 43-101
  F1;

7.

I supervised the
  work performed by other Micon staff in developing Sections 17.2 and 18.1 of
  the report, plus the development of mine operating costs in Section 18.9, and
  am responsible for these sections of the report.

8.

I have not visited
  the property which is the subject of this report;

9.

I have had no prior
  involvement with the property that is the subject of this Technical Report;

10.

I am not aware of
  any material fact, or change in reported information, in connection with the
  subject property, not reported or considered by me, the omission of which makes
  this report misleading;

11.

I am independent
  of the parties involved in the transaction for which this report is required,
  other than providing consulting services;

12.

I consent to the
  filing of the report with any Canadian stock exchange or securities regulatory
  authority, and any publication by them of the report.

Dated
  this 21st day of February, 2007

“Mani
  M. Verma”

Mani
  M. Verma, P.Eng.Exhibit 4.17

		
	MICON

	Exhibit 4.17

	International Limited

	 

PHILIP R. BEDELL

CERTIFICATE

As an author of a portion of this report, I, Philip R. Bedell do hereby certify that:

1.

I am employed as the Senior Principal Geotechnical Engineer by, and carried out this assignment for:  Golder Associates Ltd, 309 Exeter Road, Unit 1, London, Ontario, N6L 1C1, tel (519) 652-0099 fax (519) 652-6299; 

2.

This certificate applies to Section 1.6, Tailings and Water Management, of the technical report titled “Las Crucitas Gold Project, Ni 403-101 Technical Report Summary of the Bankable Feasibility Study and Addendum Report” dated February 2007, prepared for Industrias Infinito S.A. and Vannessa Ventures Ltd.

3.

I hold the following academic qualifications:

B.E.Sc., Civil Engineering, The University of Western Ontario, 1966

M.E.Sc., Soil Mechanics and Foundation engineering, The University of Western Ontario, 1967;

4.

I am a registered Professional Engineer of Ontario (membership number 03046018);  as well, I am a Design Consulting Engineer in Ontario (No. 1452);

5.

I have worked as a geotechnical engineer and consultant for the past 40 years.  My work experience includes being Senior Project Director, Manager and Design engineer responsible for major civil engineering works including the design and construction of mining, transportation and municipal infrastructure projects.  The mining projects have included the geotechnical investigation, design and construction monitoring for open pit mines and related tailings facilities and infrastructure, as well as responsibility for the review and report preparation for a forensic investigation of a tailings dam failure in South America;

6.

I am familiar with NI 43-101 and, by reason of education, experience and professional registration, I fulfill the requirements of a qualified person as defined in NI 43-101;

7.

I have visited the property which is the subject of this report in 1999;

		
	MICON

	Exhibit 4.17

	International Limited

	 

8.

I managed the preparation by Golder Associates Ltd. of the reports titled “Volume I, Study for Tailings and Waste Rock Facility, Crucitas Project, Costa Rica” (Report No. 991-3051US (1001), dated August 10, 2006); Volume II, Appendices A and B, “Geotechnical Investigation, Tailings Facility, Crucutas Project, Costa Rica: (Report No. 991-3051, dated August 10, 2006), and Volume III, Appendix C, “Geotechnical Investigation, Tailings Facility, Crucitas Project, Costa Rica” (Report No. 991-3051US(1001), dated August 2006).  The relevant portions of these reports have been incorporated in Micon’s Bankable Feasibility Study and summarized in NI 43-101 Technical Report summary of the Bankable Feasibility Study and Addendum Report.

9.

I am independent of the parties involved in the transaction for which this report is required, other than providing consulting services;

10.

I was previously involved with the property as Geotechnical Consultant to Lyon Lake Mines in 1999.

11.

I am familiar with NI 43-101 and I consider that the portions of the report pertaining to the tailings and waste rock management have been prepared in compliance with the instrument.

12.

As of the date of this certificate, to the best of my knowledge, information and belief, the portions of the technical report for which I am responsible contain all scientific and technical information that is required to be disclosed so as to make the technical report not misleading.

13.

I consent to the filing of the report with any Canadian stock exchange or securities regulatory authority, and any publication by them of the report.

Dated February 22, 2007

“Philip R. Bedell”

Philip R. Bedell, P.Eng.

		
	MICON
	Exhibit
        4.17

	International
        Limited
	 

KENNETH
  J. DE VOS

CERTIFICATE

As an author of an appendix within this
  report, I, Kenneth De Vos do hereby certify that:

1.

I am employed as
  a Hydrogeochemist by, and carried out this assignment for:  Golder Associates
  Ltd, 2390 Argentia Road, Mississauga, Ontario, L5N 5Z7, tel (905) 567-4444 fax
  (905) 567-6561; 

2.

This certificate
  applies to the report titled “Water Quality Modeling of the Waste Storage
  Facility Pond”, referred to as Appendix 6B titled “water quality”
  of the Bankable Feasibility Study prepared for Industrias Infinito S.A. and
  Vannessa Ventures Ltd.

3.

I hold the following
  academic qualifications:

B.Sc. (Hons) Applied
  Earth Science, University of Waterloo, Waterloo, ON, 1992

M.Sc. Applied Earth
  Science, University of Waterloo, Waterloo, ON  1995.

4.

I am a registered
  Professional Geoscientist of Ontario (membership number 0908); as well, I am
  a registered Professional Geologist in Alberta (membership number M72089) and
  a registered Professional Geologist licensee in Northwest Territories.

5.

I have worked as
  a geochemist specializing in assessment of environmental assessment and geochemistry
  of mining properties in consulting engineering companies for the last 14 years.
   My work experience includes the management of environmental aspects of
  feasibility studies, management of geochemical and water quality testwork programs
  and the development of environmental implications and specifications for waste
  rock and tailings management options.

6.

I am familiar with
  NI 43-101 and, by reason of education, experience and professional registration
  I fulfill the requirements of a qualified person under Section 1.1 part b) of
  the definition of “qualified person” in NI 43-101 for the subject
  matter as provided in Appendix 6B.

7.

I have visited the
  property which is the subject of this report in November of 2005;

8.

I managed the preparation
  by Golder Associates Ltd. of the reports titled “Water Quality Modeling
  of the Waste Storage Facility Pond”. The report incorporates information
  provided by Vannessa Ventures Ltd. personnel, which I have reviewed and provided
  recommendations on potential data gaps as outlined in the report.  Appendix
  6B of the Bankable Feasibility Study titled “water quality” has referred
  to this report in its entirety.  Relevant portions of the report have been
  reproduced in “Section 1.6.1 ARD and Water Quality” and Section 18.3.1
  ARD and Water Quality” of NI 43-101 Technical Report Summary of the Bankable
  Feasibility Study and Addendum Report.

9.

I am independent
  of the parties involved in the transaction for which this report is required,
  other than providing consulting services;

10.

I have no prior involvement
  with the property or the issuer. 

  

		
	MICON
	Exhibit
        4.17

	International
        Limited
	 

11.

I have read NI 43-101
  and I consider that the specific calculations as reported in the report titled
  “Water Quality Modeling of the Waste Storage Facility Pond”, for which
  I am responsible have been prepared in compliance with the instrument, however
  in completing these calculations reliance was placed on baseline water quality
  data as provided by Vannessa Ventures Ltd. and recommendations regarding data
  gaps have been provided in the report.  Due to the historical nature of
  the data provided by Vannessa Ventures it was not possible to review the details
  and QA/QC program for the water quality baseline data.

12.

As of the date of
  this certificate, to the best of my knowledge, information and belief, the calculations
  completed for which I am responsible contain the scientific and technical information
  that is required to be disclosed to make the methodology of the calculations
  not misleading.  The resulting calculated water quality heavily relies
  on baseline water quality data and process water quality data and groundwater
  quality data as provided by Vannessa Ventures Limited and was not verified.
   Although the methodology and calculations are not misleading the accuracy
  of the end result may vary and is dependant on the quality of the data provided
  by Vannessa Ventures Limited.

13.

I consent to the
  filing of the report with any Canadian stock exchange or securities regulatory
  authority, and any publication by them of the report.

Dated
  February 21, 2007

“Kenneth
  J. DeVos”

Kenneth
  J. DeVos, P.Geo.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00130-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00130-of-00352.parquet"}]]