Pulacayo Project Feasibility Study - Apogee Silver

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Pulacayo 1 000 t/d Phase I Feasibility Study - NI 43-101 Technical Report 090644-3-0000-20-IFI-100 16.9.5 Swell Factor The swell factor is the ratio of the bank density of material to the loose density of the same material. It is used to calculate the weight and volume of material that has been blasted and is to be loaded and hauled to its destination. The average in-situ density of ore and waste is 2.47 t/m 3 and 2.2 t/m 3 respectively. The swell factor for both ore and waste is estimated to be 30% and the loose densities were estimated to be 1.90 t/m 3 for ore and 1.69 t/m 3 for waste. 16.10 Mine Equipment Fleet Requirements A trade-off study has been done to estimate the fleet of equipment required to meet the mine’s production targets. To avoid double accounting, the study took into account the equipment that the mine already owns. The mine is currently extracting the upper portions of the deposit using shrinkage stoping and the primary equipment used to accomplish this is listed below: 4 locomotives 4 flat cars 10 x 1 tonne Granby cars 5 x 4 tonne hoppers 2 air loaders (each with a 0.5 tonne bucket) 12 stopers 12 jackleg hand-drills In addition to the equipment listed above, the mine also owns a fleet of refurbished trackless equipment, which is not currently in use (see Table 16.5 below). Table 16.5: Trackless Equipment Owned by Pulacayo Mine Equipment Model Quantity LHD Atlas Copco ST3.5 with a bucket capacity of 3.1 m 3 and a tramming capacity of 6.0 tonne 2 Truck Atlas Copco MT416 Wagner with a dump box volume of 7.5 m 3 and a rated payload of 15 tonne Development drill rig Sandvik secoma quasar 14B 1 1 16.10.1 Primary Equipment Table 16.6 summarizes the number of primary equipment required to supplement the equipment that the mine already has. These were determined based on the mine calendar and the production schedule: TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473 Page 163
Pulacayo 1 000 t/d Phase I Feasibility Study - NI 43-101 Technical Report 090644-3-0000-20-IFI-100 Table 16.6: Additional Primary Trackless Equipment Equipment Typical model Quantity Truck Atlas Copco MT2010 with a dump box volume of 8.4 m3 and a rated payload of 20 tonne 1 Production drill rig Resemin raptor 55 drill rig (51 to 89 mm diameter) 1 Roof bolter Resemin bolter 77D 1 Shotcreter Atlas Copco Uni-grout miniflex E with a 200L capacity for the cemag agitator and 100L for the cemax mixer 1 16.10.2 Ancillary Equipment The ancillary equipment required to support the primary fleet of the mine was also determined. These are tabulated below. Table 16.7: Additional Primary Trackless Equipment Equipment type Typical model Quantity Cassette carrier Fermel liberator RoRo cassette handler 2 Cassette (attachment) Fermel flatbed 1 Fermel scissors lift 1 Fermel fuel and oil lube cassette with 2 x 500L oil tanks, 1 x 250L oil tank and 1 x 500L diesel tank Fermel general purpose cassette 1 1 16.11 Manpower Requirements Table 16.8 below summarizes the manpower requirements of Pulacayo mine per annum. Underground workers will be operating on an 8 days on, 4 days off, roster and they will be alternating between morning and night shifts. All the other departments (engineering, technical services and stores) will be operating during the day shift only. A 12% provision (for leave) has been made on underground workers that are fundamental to mine production and development. TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473 Page 164
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Pulacayo Project Feasibility Study - Apogee Silver

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