1. Nichromet Extraction Gold Technology
10/31/07

2. Nichromet Cyanide-Free Gold Extraction Technology
A green alternative to
the classical cyanide approach
Give access to ores
refractory to cyanidation
Less costly than the
classical processes without
environmental mortgage on residues
Can be implemented as modular plant
Nichromet Extraction Inc.
3700, Lac Noir Street
Thetford Mines (Qc)
10/31/07

3. Vision
Develop an economic alternative to classical cyanide process for gold extraction, while keeping a sustainable development approach minimizing the impact on the environment.
10/31/07

4. Overview of the Process
Controlled Oxidation
Sulphides Ores
Sulfuric Acid
Acid
Leaching
Base Metals
Halogens Treatment
Precious Metals
Inert Tailings

5. Nichromet Process Flowsheet

6. Advantages Over Cyanide
Faster Reaction Time
Process time of few hours instead of few days
Legal issues
Cyanidation has been banned in many countries and some States in USA (ex:Wisconsin)
Extraction of silver and PGM if present
10/31/07

7. Environmental Advantages
No cyanide
No tailings pond (elimination of spillage hazard)
No liquid effluent
Solids residues devoided of sulphides and base metals
No acidic lixiviate or contaminants from tailings site
10/31/07

8. Characteristics of the Nichromet Technology
Flexible
Can handle base metals (bulk flotation : higher efficiency)
Can treat carbonaceous ore
Can handle telluride contamination
Fast
Leaching time of 2 hours instead of 2 days for cyanide
Green
Cyanide-free process
Sulfide is recycled as sulfuric acid
No waste water, no tailing pond and no air pollutants
Solid wastes : inert and stable, even when using high arsenic ores
Profitable
Process cost ($/oz gold) similar to cyanide
Capital cost lower (10-15%) than cyanide

9. Successfully piloted at the ton scale on a wide range of materials
Sources
Type
Grade (g/T)
Barren Solid (g/T)
Yield (%)
1: Canada (Quebec)
Ore
2,58 g/T
0,07 g/T
97,5 %
2: Canada (Quebec)
3,45 g/T
0,34 g/T
93,2 %
3: Canada (Quebec)
13,9 g/T
0,79 g/T
95,4 %
4: Canada (Ontario)*
Conc.
55,3 g/T
4,79 g/T
94,0 %
5 : Eastern Europe*
7,5 g/T
1,48 g/T
91,0 %
6: Canada (Quebec)*
53,5 g/T
3,56 g/T
94,1 %
*Flotation concentrates requiring pre-treatment by oxidation

10. Environmental Recognition
Grant of 700 k$ from Green Technologies Demonstration Program of Quebec Government in Grant of 5 M$ from Sustainable Technology Development Fund of Federal Governement in 2013
10/31/07

11. Somine Haïti Project vs
Nichromet Technology
Current gold estimated resources (3,2 MT)
Gold : oz 3,27 g Au/T
Copper : 28 0,4 %Cu
Exploitation permit in force
Mining plan
Near surface resources (open pit potential, low operating cost)
20 M$ investment done in exploration to date
10/31/07

12. Nichromet plant in Haïti
Great Potential for a
Nichromet plant in Haïti
Phase I
Bring the top layer of the deposit into production with a modular plant to process oxides concentrate
15 M$ investment for the modular plant only
Potential of oz Au/year
Phase II
1000 TPD Mine and full scale processing plant
Gold production rate of oz Au/yr
Investment for Nichromet processing plant of 35 M$
Nichromet is currently conducting a demonstration program for the application of its technology on the Faille B deposit.
10/31/07

13. Toward a Greener Gold Industry
10/31/07