NI 43-101 Preliminary Economic Assessment - Verde Potash
NI 43-101 Preliminary Economic Assessment - Verde Potash
NI 43-101 Preliminary Economic Assessment - Verde Potash
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SRK Consulting (U.S.), Inc.<br />
7175 West Jefferson Avenue, Suite 3000<br />
Lakewood, CO<br />
USA 80235<br />
denver@srk.com<br />
www.srk.com<br />
Tel: 303.985.1333<br />
Fax: 303.985.9947<br />
CERTIFICATE OF AUTHOR<br />
I, Neal Rigby, CEng, MIMMM, PhD, do hereby certify that:<br />
1. I am Corporate Mining Engineer of:<br />
SRK Consulting (U.S.), Inc.<br />
7175 W. Jefferson Ave, Suite 3000<br />
Denver, CO, USA, 80235<br />
2. I graduated with a BSc degree in Mineral Exploitation with first class honors in 1974 and a PhD in<br />
Mining Engineering in 1977 both from the University of Wales, UK.<br />
3. I am a member of the Institute of Materials, Mining and Metallurgy.<br />
4. I have worked as a Mining Engineer for a total of 36 years since my graduation from university. My<br />
relevant work experience includes underground and open pit potash, phosphate and trona projects,<br />
open pit mines and quarries, project design and evaluation and cash flow modeling.<br />
5. I have read the definition of “qualified person” set out in National Instrument <strong>43</strong>-<strong>101</strong> (<strong>NI</strong> <strong>43</strong>-<strong>101</strong>) and<br />
certify that by reason of my education, affiliation with a professional association (as defined in <strong>NI</strong> <strong>43</strong>-<br />
<strong>101</strong>) and past relevant work experience, I fulfill the requirements to be a “qualified person” for the<br />
purposes of <strong>NI</strong> <strong>43</strong>-<strong>101</strong>.<br />
6. I am responsible for the Sections 1-4, 10 and 13-24 of the <strong>Preliminary</strong> <strong>Economic</strong> <strong>Assessment</strong> titled <strong>NI</strong><br />
<strong>43</strong>-<strong>101</strong> <strong>Preliminary</strong> <strong>Economic</strong> <strong>Assessment</strong>, Cerrado <strong>Verde</strong> <strong>Potash</strong> Project, Minas Gerais, Brazil,<br />
August 3, 2011, and dated September 16, 2011 (the “<strong>Preliminary</strong> <strong>Economic</strong> <strong>Assessment</strong>”) relating to<br />
the Cerrado <strong>Verde</strong> property. I have not visited the Cerrado <strong>Verde</strong> property.<br />
7. I have had prior involvement with the Cerrado <strong>Verde</strong> property that is the subject of the <strong>Preliminary</strong><br />
<strong>Economic</strong> <strong>Assessment</strong>. The nature of my prior involvement was as the qualified responsible for the<br />
preparation of Sections 5 through 12, 15, and 18 of the report titled, “<strong>NI</strong> <strong>43</strong>-<strong>101</strong> <strong>Preliminary</strong><br />
<strong>Economic</strong> <strong>Assessment</strong>, Cerrado <strong>Verde</strong> <strong>Potash</strong> Project, Minas Gerais, Brazil”, December 13, 2010.<br />
8. I am independent of the issuer applying all of the tests in section 1.5 of National Instrument <strong>43</strong>-<strong>101</strong>.<br />
9. I have read <strong>NI</strong> <strong>43</strong>-<strong>101</strong> and Form <strong>43</strong>-<strong>101</strong>F1, and the <strong>Preliminary</strong> <strong>Economic</strong> <strong>Assessment</strong> has been<br />
prepared in compliance with that instrument and form.<br />
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