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 Item Description Detail 6 Structural Steel 7 Tanks and Platework (Chutes and Pump Boxes) 8 Piping/Valves 9 Electrical 10 Material/Quantity Take-offs (MTO’s) 11 Instrumentation by contractors, assuming that the concrete will be produced in a batch plant fed with aggregated obtained nearby the project site The weight of structural steel (metallic structures) is obtained from design models (SAP 2000) and the bolts and connections are estimated according to weight ratios. Handrails and grating panels are measured from the plant layout and the grout is calculated according to the section of the column Quantities for platework and metal liners for tanks, pump boxes and chutes have been calculated from sketches and provided in kilograms of steel. Unitary prices used were obtained from provider and from the TWP’s database, as appropriate Piping and fittings quantities are based in quantity take-off with prices (USD/m) budgetary quotes. The quantity take-offs are developed from pipe routing drawings based on the general arrangement drawings and the P&ID’s which identifies pipe size. The list of materials (MTO’s) have been developed for the main pipes only (as shown in the piping route GA). These pipes have been costed based on this information and the available quotes for materials/accessories. The rest of the pipes for each processing area will be costed based on a percentage of the total pipes capital costs Power cables costs have been estimated by using rates (USD/m). Electrical costs have been developed from the related study deliverables of others disciplines and are based on the single line diagram (substations, switchgear, switchboards, power transformers and motor control centers), drawings and sketches. The mechanical equipment list was used to estimate plant loading and site power requirements. The equipment list in conjunction with the site plan was used to determine electrical building locations by centralizing electrical infrastructure to minimize cable runs. Major electrical rooms are located within the large process buildings and infrastructure. Electrical equipment and cable (caliber length) prices are supplied by providers. TWP’s database has been used as appropriate. Field instrumentation costs are derived from in-house pricing data base and recent pricing obtained from recent similar projects Material take-offs were prepared for all facilities. In addition to the equipment list and other engineering discipline deliverables, the engineering disciplines are also responsible to generate bulk materials take-offs for estimating. A material take-off is the process of analyzing drawings and determining all the materials required to complete the design (list of materials, quantities, types, grades of materials and the weights of such materials) It is based on the list of Instruments and Control Equipment, quotations from suppliers and/or ratios that are accordance with the TWP database of similar projects. Fields instrumentation costs are derived from in-house pricing database and recent pricing obtained from recent similar project TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473 Page 259
Pulacayo 1 000 t/d Phase I Feasibility Study - NI 43-101 Technical Report 090644-3-0000-20-IFI-100 Item Description Detail 12 EPCM 13 Indirect Costs It is based on quotes from contractor’s and/or ratios in accordance with the TWP database of similar projects It is based on quotes from suppliers and/or ratios that are according to the TWP database of similar projects 21.1.1.2 Direct Costs Direct costs include all new equipment, material, and installation of permanent facilities associated with the following: Mine equipment fleet Mine ventilation equipment Underground workshop equipment Backfill plant/system equipment Crushing, material handling and processing facilities Process buildings Plant mobile equipment Infrastructure roads and site preparation Power supply and distribution Concentrate load out Pre-production mining Tailings storage area Warehousing Administration Truck shop (underground mine) Yard services and other utilities Control and communications systems Fuel storage Magazine (explosives storage) The direct costs are referred to the expenses directly incurred during the physical development of the project, including the processing equipment, materials take-off (MTO’s), rates for construction (labor for construction and supervision), construction equipment, contract services, transportation costs, assembly and installation of infrastructure, civil works metered (concrete, structural steel, coverage), piping, electric equipment (substations, transmission and distribution lines). TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473 Page 260
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Pulacayo Project Feasibility Study - Apogee Silver

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