Pulacayo Project Feasibility Study - Apogee Silver

Pulacayo 1 000 t/d Phase I Feasibility Study - NI 43-101 Technical Report
090644-3-0000-20-IFI-100
In order to proceed with detailed engineering, additional geotechnical studies must
be carried out at the location of all infrastructure and along the railway line from the
mine to plant. The program must include drilling, surveys as well as laboratory soil
analysis and soil dynamic stability studies and contour and elevation surveying.
Conduct geotechnical surveys at the location of the TSF to confirm the slope of the
TSF and for the stability of the various catchment ponds
Optimize the auxiliary buildings layout based on new developments proposed by
Apogee and on detailed topography and geotechnical surveys.
Evaluate an alternate tailings storage technology that may result in reduced capital
cost and footprint.
Review opportunities for early completion of construction to reduce start-up times.
Further drilling is recommended to expand and delineate the mineral resource on the
Pulacayo deposit.
26.5 Financial Analysis
Further technical-financial analysis to be carried out as the Project progresses to the
basic/detailed engineering stage, and to evaluate the impact of any new data.
Consider financial arrangements targeted to further reduce working capital needs.
The refinery that will purchase the concentrates should be identified, particularly with
a view to identifying and understanding the impact penalty elements may have on the
revenue and possibly on the process.
26.6 Environmental and Permitting
Ore acid generating potential should be re-assessed and additional ABA (acid-base
accounting) tests are recommended.
Conduct air quality dispersion modeling using modeling systems to predict future
concentrations at and off the boundary of the Project.
For reclamation and closure, conduct a complete soil and borrow material inventory
focused on moisture retention, erodability and other soil quantities for use in final
reclamation and site re-vegetation.
26.7 Water Management
Continuous on monitoring of precipitation, surface water flow and water quality
should be conducted to ensure compliance through the development, operational,
reclamation and closure plan stages of the Project.
The mine dewatering system will require modification and refinement as more data
becomes available during advanced exploration and initial construction and
operation.
It is recommended that an in-depth site-wide water balance be prepared.
A detailed hydro-meteorological study for supporting the final design should be
conducted.
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