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
The corresponding budget for these works have been already disbursed by the Client and are
therefore Sunk Costs for the present project and will not be considered in the calculation of the
capital cost in the feasibility study.
The earth movement cost and platform construction that has not been built has been estimated
from drawings and quantities derived from the drawings.
Concrete Works
Concrete and formwork quantities were determined based on the mechanical arrangements –
plan/elevation view drawings and sketches. No allowances for over-pour, wastage or rework were
considered. The unitary concrete prices are all-in (concrete reinforcing steel and formwork).
Additionally, the data of the Soil Mechanics Study (Geotecnia, Tarifa Fernandez S.R.L., Bolivia,
Julio 2011) was taken into consideration to calculate the bearing capacity and depth of the
concrete foundations.
To size the foundations for vibrating equipment, a ratio in the range of 1 to 3 (for each ton of
equipment, three tons of concrete is used) was used.
For foundations for structures, the concrete dimensioning is subject to a weight ratio of the
structure (kg) per foundation area (m 2 ) given that this relationship should not be below the soil
bearing capacity.
Reinforcing steel is obtained by ratios (kg/m 3 ) according to the volume of concrete and structural
elements (footings, slabs, columns, walls, beams). The unit of measure of the cost of concrete is
based on ratios in USD/m 3 . These ratios are in according to the TWP database of similar
projects.
The concrete price included supply of concrete from an on-site batch plant.
For slabs, the quantity of concrete to be used depends on the application. For pedestrian traffic,
concrete is 15 cm thick, for light traffic, concrete is 20 cm thick. If the slab is to be used for heavy
machinery traffic, the concrete thickness is in the range of 25 cm to 30 cm.
d) Structural Steel Works
Structural steel quantities were developed from general arrangement drawings and experience
from previous projects of similar nature. Unit rates (USD/kg) have been provided by regional
contractors. The weights include allowances for connections, stiffeners, clips, base plates, etc.
e) Equipment (Process and Mechanical)
The equipment was classified and budgeted from the Equipment List. The providers quotations
are a fundamental part in the selection of the equipment considered in this study (main and
secondary equipment). As is necessary, most of the equipment and material will be imported due
to a lack of availability in Bolivia. Where equipment is available in Bolivia, it will be procured
locally. Imported equipment will be shipped by ocean, rail and trucks. Transport costs have been
considered as indirect costs and have been estimated from quotations from logistics companies
operating in South America. Equipment already purchased by Apogee was excluded (Maelgwyn
flotation cells, Andritz press filters, and Pengfei comminution equipment).
TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473
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