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Pulacayo Project Feasibility Study - Apogee Silver

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<strong>Pulacayo</strong> 1 000 t/d Phase I <strong>Feasibility</strong> <strong>Study</strong> - NI 43-101 Technical Report<br />

090644-3-0000-20-IFI-100<br />

Parameter Unit Value<br />

Mean % 2.78<br />

Specific Gravity Design - 2.65<br />

Range - 2.65 ­ 3.02<br />

Mean - 2.85<br />

Crushed Ore Bulk Density - 1.67<br />

Moisture Content % 8­10<br />

Abrasion Index (Ai) Design - 0.4<br />

Clays Content - - Yes<br />

Bond Rod Mill Work Index Design kW-h/t -<br />

Bond Ball Mill Work Index Design kW-h/t 14.8<br />

Range kW-h/t 13 ­ 14.6<br />

Mean kW-h/t 14<br />

Bond Crusher Work Index Design kW-h/t 16.3<br />

Angle of Repose Coarse Ore º 35<br />

Angle of Repose Fine Ore º 42<br />

Angle of Drawdown º 70<br />

OPERATING PHILOSOPHY<br />

General<br />

Plant Throughput (Maximum Throughput) t/y 360,000<br />

t/d 1,000<br />

Life Of Mine (LOM) y 12.5<br />

Operating Days Per Year Nominal d/y 360<br />

Operating Hours Per Day Nominal h/d 24<br />

Operating Hours Per Year Nominal h/y 7,446<br />

Crushing Operating Schedule<br />

Crushing Operating Hours Per Year Design h/y 7,446<br />

Crushing Overall Availability % 86.2<br />

Shifts - 2<br />

Design h/shift 12<br />

Concentrator Operating Schedule<br />

Milling Operating Hours Per Year Design h/y 7,446<br />

Milling Availability % 86.2<br />

Shifts - 3<br />

Design h/shift 8<br />

TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473<br />

Page 169

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