ANEXO VIII. Especificaciones técnicas de las perforadoras. Minera Barrick Misquichilca S. A. Proyecto de Exploración Minera Misha

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1 Minera Barrick Misquichilca S. A. Proyecto de Exploración Minera Misha Declaración de Impacto Ambiental ANEXO VIII Especificaciones técnicas de las perforadoras R DIA Misha ZC1281 A02 Marzo 2015

2 Minera Barrick Misquichilca S. A. Proyecto de Exploración Minera Misha Declaración de Impacto Ambiental ANEXO VIII-1 Perforadora Christensen CS R DIA Misha ZC1281 A02 Marzo 2015

3 Specifications CHRISTENSEN CS3001 is an all-hydraulic operated diamond core drill. The CHRISTENSEN CS3001 is an all-hydraulic diamond core drill for deep hole surface exploration drilling. The CS3001 is designed to be mounted on a truck and can also be mounted on tracks. The CHRISTENSEN CS3001 uses well proven technology for diamond core drills together with safety improvements to provide a reliable, safe drill. An optional spin-out tool avoids the use of pipe wrenches for breaking rods General Recommendations To achieve the best results with regard to: high penetration optimal core recovery low drilling costs It is of primary importance that drill rods, core barrels and coring bits are of the right type and quality, matched to the drill and to the prevailing rock conditions. Bearing in mind the core drill s speed of rotation, its depth rating and chuck diameter, the CHRISTENSEN CS3001 is best suited to drill N to P size holes using wire line rods. 5-1

4 CS3001 Technical Specifications Drill Mast Feed stoke m (11 ft) Mast slide m (80 in) Rod pull m (20 ft) Mast style...one-piece Weldment Feed pull kn (35,000 lbf) Feed thrust kn (14,000 lbf) Drill rod centerline location... In front of mast Main Winch Main winch pull kn (30,000 lbf) Main winch speed: m/sec (146 max displacement m/sec (230 min displacement Rope size mm (3/4 in) Drillhead Chuck axial holding capacity:.178 kn (40,000 lbf) Actuation...Spring apply, hydraulic release Number of jaws... 5 Drillhead...Chain final drive plus 4 speed...transmission Chuck mounting... Bolt on Final drive ratio :1 Drillhead spindle ID..119 mm (4.68 in) Foot Clamp Hydraulically operated, self energizing foot clamp Easy-to-remove jaws Common jaws from 44.5 mm (1.75 in) to mm (7 in) Casing and rod jaws for all popular sizes 224 mm (8.8 in) foot clamp opening 320 mm (12.5 in) mast bottom opening Fig. 5.1 Foot Clamp & Optional Spin-Out Tool (Shown With Foot Clamp Guard Removed) Wireline Winch Drum Capacity: -4.7 mm (3/16 in) wire rope... 4,600 m (15,000 t) -6.3 mm (¼ in) wire rope... 2,600 m (8,530 ft) Levelwind for even spooling...standard Parking brake.standard Winch position... Raised on stand Control Console Console movement... Hydraulic in and out Weight (less truck): 12,810 kg (28,240 lbs) will vary with options Fig. 5.2 Control Console & Drillhead 5-2

5 Diesel Engine - See Drill Manual Section II for information on the Diesel engine. Diesel Fuel Reservoir Capacity.950 L (250 gal) Filling method By hand pump.connected to main return filter Hydraulic System Hydraulic tank capacity 500 litres (132 gal) Max. operating pressure - Main pump bar (4,700 psi) - Auxiliary pump bar (2,800 psi) - Secondary pump* 207 bar (3,000 psi) Max. flow - Main pump l/min (72 gpm) - Auxiliary pump l/min (33 gpm) - Secondary pump* l/min (25 gpm) *Note: This is the secondary pump pressure and flow on the standard CS3001. The drill may have a different secondary pump if the mud/water pump is different than the standard FMC W1122BCD. See the addenda sheets (section 18), parts list and hydraulic schematic for the drill. Options Spin-Out Tool for mechanized rod makeup and break-out Depth Capacity Coring* B Wireline.. 2,360 m (7,740 ft) N Wireline... 1,830 m (6,000 ft) N Wireline Upset Ends... 2,120 m (6,950 ft) H Wireline... 1,200 m (3,930 ft) P Wireline m (2,720 ft) * For vertical, straight, water filled hole Drillhead RPM and Torque Ratings at max. & min. displacements: -At rotation pressure of 4,300 psi -Max displacement of 80 cc -Min displacement of 62 cc Gear Max Displacement RPM Min Displacement Torque Nm (ft lbf) Max Displacement Min Displacement 4 th 1,300 Limited to 1, (622) 653 (482) 3 rd ,449 (1,069) 1,123 (828) 2 nd ,671 (1,970) 2,070 (1,527) 1 st ,587 (4,121) 4,329 (3,193) 5-3

6 Dimensions Dimensions (in mm) are subject to change. If required, consult with factory to get dimensions certified. Fig. 5.4 Shipping Dimensions Elevation Fig. 5.5 Shipping Dimensions Plan View 5-4

7 Fig. 5.6 Truck Mounted Drill in Transport Position Elevation 5-5

8 Minera Barrick Misquichilca S. A. Proyecto de Exploración Minera Misha Declaración de Impacto Ambiental ANEXO VIII-2 Perforadora Hydracore R DIA Misha ZC1281 A02 Marzo 2015

9 Especificaciones Hydracore Potencia BF4L914 c/u. Cabeza de ancho, Bombas hidráulicas Dos Motores de 100 HP Deutz Tipo -Poly chain Drive, 90mm Tamaño máximo de Portabrocas HQ Tipo de Portabrocas Longyear Hidráulico, modificado Rango de velocidad Rpm, Plena Potencia de RPM Torsión máxima 1700 pies-libras hacia adelante, 2828 pies-libras reversa. Desplazamiento del Motor Principal 250 centímetros cúbicos por revolución Proporción de la correa :1 Función Principal Bomba de Agua Bomba Auxiliar Reversa, grampa Tipo Engranaje (2) Detección de carga Comp. presión Pistón Flujo 43 GPM 19 GPM 19 GPM 3.5 GPM Presión Máxima 3500 PSI 3500 PSI 3500 PSI 5000 PSI Alimentación Longitud - 70 Empuje Máximo - 12,500 libras A 2500 PSI Arrastre Máximo - 24,500 libras A 2500 PSI Capacidad de profundidad Reservorio Hidráulico Equipo Opcional - 2,000 HQ -4,000 NQ -5,000 BQ Capacidad 17 galones de petróleo enfriados por intercambiadores de calor Mezcladora de Lodos Operada hidráulicamente Bomba de agua 20 GPM Operada hidráulicamente Winche de cable wireline 2000 capacidad