BUENAVENTURA IOCG PROJECT ATACAMA REGION COPIAPO 2018 EXECUTIVE

BUENAVENTURA IOCG PROJECT ATACAMA REGION COPIAPO 2018

EXECUTIVE SUMMARY • • Project: BUENAVENTURA, Advanced Exploration Mineralization: Fe-Cu±Au IOCG type Potential Resources: > 200 M ton, probable average grade 0, 5%Cu Additional Resources: Au-Co could raise to 0, 7 ó 0, 8% Cu equivalente grade Location: 50 km North Copiapó Mining Property: 20 concessions, 3. 820 Há Expenses in Explorations Performed: U $ 6 M approx. Geological Characteristics : – Volcanoclastic rocks of the Punta del Cobre Formation (K), diorites and tonalites of the San Juan pluton (Km) and Plio-Quaternary alluvial deposits. – Hydrothermal alteration assemblage: quartz-sericite, chlorite-sericite ± feldspar K, albitizations and actinolite-epidote – NS, NNE and NW fault systems associated to Atacama Fault Zone.

EXECUTIVE SUMMARY • IMMEDIATE TARGETS A. Brecha – Pampa Norte • Features: – Cu mineralization in veins, veinlets and breccias – Oxidation zone: 80 m approx. – Mineralized intervals: 2 -50 m long, 0. 1 to 0. 4% Cu grade and local gold. – Copper maximums: 1 -2 % Cu. – Distribution of Cu ± (Au-Co) in high magnetic anomaly – Cu mineralization related to IP and gravimetric anomalies • IP and gravimetric anomalies more than 300 m deep • Targets 1 and 2: geophysical anomalies related to ox. Fe-Cu ± Au mineralization. • Initial exploration: 2 DDH holes, N 60°E /60°NE, 700 m long each

EXECUTIVE SUMMARY B. Amada – Berta: • Features: – Cu mineralization in veins and veinlets WNW-WSW/70°S – Oxidation: 120 -150 m – Mineralized intervals: 2 -90 m, grades 0, 1 -0, 9%Cu. – Copper maximums: 0, 67 -2, 93% Cu to 8% Cu (SA-13). – Local gold: 0, 10 -0, 19 g/t Au. • Cu mineralization in pervasive hydrothermal zone, over magnetic and gravimetric lows. • Targets 3 and 4: vein and vein systems with ox. Fe-Cu ± Au mineralization. • Initial exploration: 2 DDH holes, NS/60°N, 700 m long each

LOCATION AND MINING PROPERTY 50 km North Copiapó Concessions: 20 Area: 3. 820 Há

WORK CARRIED OUT • • • Geological Mapping o Distritals 1: 20. 000 o Locals 1: 2. 000 1: 5. 000 Geochemical Analysis o 2001 to 2008: Cu, Ag, some ICP o 2009 to 2012: Cu, Fe, Au, ICP Petrographic studies • • Geophysical Studies o 2004: IP, Magnetometry o 2005: Expansion of IP / Resistivity studies o 2008: Gravimetry, Reprocessing of geophysical data (Fugro Airbone Survey) o 2011: 2 D ZTEM Inversion Drillhole program o RC/DDH: 19. 079 m

REGIONAL GEOLOGY • • Colluvial, alluvial (Mioc-Holoc) Volcanic and sedimentary rock o La Negra (Jm-s) o Pta. del Cobre (Js-Ki) o Bandurrias (Js-Ki) o Grupo Chañarcillo (Kinf) • Granitoids o 150 -160 Ma , Js (Pl. Agua del Sol) o 131 -134 Ma, early Ki (P. Sierra 18) o 92 -119 Ma , late Ki (P. San Juan, Remolino) Hydrothermal alterations • • Faults and lines NNE-NS and NNW related to Atacama Fault System

DISTRITAL GEOLOGY • • Volcanic rocks o Fm. La Negra (Jln) o Fm. Pta. del Cobre (JKpc) Plutonic rocks o Dacitic Porphyries (JK) o Diorite, granodiorite (Kgsj) Alluvial deposits (Plio-Hol) Fault Systems o NS to NNW o NNE

DISTRICT HYDROTHERMAL ALTERATION • Hydrolitic alt. • Sodic alt. • Undifferentiated alterations o Albitizations o Silicifications o Sericite-Chlorite o K Feldspar

GEOPHYSICAL STUDIES INDUCED POLARIZATION GEOPHYSICS: 2004: IP ; 2005: IP and gravimetry Results: detection of conductive bodies more than 300 m deep.

GEOPHYSICAL STUDIES GRAVIMETRY • • • NE anomaly Study suggests dense body at depth Complex topography and geology make interpretation difficult

GEOPHYSICAL STUDIES MAGNETOMETRY • AM AD A BRECH A • LOM NEG A RA BERTA • Franja magnética NNE sobre traza Falla Chivato Núcleo magnético moderado al W de C. Brecha (1 km² aprox. ) Alto magnético NNE entre Loma Negra y Amada -Berta

PROSPECTED AREAS 1. BRECHA-PAMPA NORTE Ox Fe - Cu ± Au; NW veins and breccia bodies 1 2 3 2. AMADA-BERTA Ox /sulf Cu ± ox Fe ± Au. WNW to WSW veins and veinlets 3. LOMA NEGRAPAMPA SUR Cu-Fe indications, NW veins and disseminations or impregnations in the rock. TOTAL DRILLHOLES Little more than 19, 000 m of RC and DDH holes

ÁREAS INTERÉS PRIORITARIO SECTORES BRECHA Y AMADA • BRECHA – – – 39 holes 5 holes <100 m 22 holes 100 -300 m 7 holes 300 -400 m 5 holes >400 m BVRD 01= 650 m • AMADA – – – 34 holes 20 holes<100 m 9 holes 100 -300 m 4 holes 300 -400 m 1 hole >400 m BVRC 01= 500 m

AREAS OF PRIORITY INTEREST MINERALIZED STRUCTURES BRECHA NW principal system: Portezuelo fault and mineralized veins/breccias. Brecha fault: postmineral NNE fault. AMADA NS a NNE principal faults WNW to WSW mineralized veins and veinlets system

COOPER GRADES BRECHA – PAMPA NORTE HOLE FROM TO STRETCH m Cu%_máx Au g/t_máx Co_ppm_máx OBSERVATIONS SB 02 16 46 30 0, 32 0, 81 0, 09 72 stockw/vlls bx spc 24 52 28 0, 43 2, 40 0, 11 bx spc, lim, ox. Cu 172 200 28 0, 43 1, 18 0, 34 222 bx spc, py-cpy 92 148 56 0, 27 0, 63 0, 27 849 stockw/dis spc, py-cpy 78 88 10 0, 88 1, 65 0, 17 stockw/vlls spc, py-cpy 102 106 4 1, 06 1, 47 0, 13 95 stockw/vlls spc, py-cpy SB 09 10 16 6 0, 13 0, 16 0, 14 162 stockw/bx spc, lim, fragm rx volc alt SB 12 40 76 36 0, 21 0, 88 1, 31 lim, neotoc SB 03 SB 05 SB 06

COOPER GRADES BRECHA – PAMPA NORTE HOLE BH 01 BH 03 BH 07 BH 08 FROM TO STRETCH m Cu%_máx Au g/t_máx Co_ppm_máx OBSERVATIONS 140 146 6 0, 32 0, 40 py-cpy, enriq 2º? 168 172 4 0, 18 py-cpy 386 388 2 0, 38 spc, py-cpy 92 96 4 0, 19 Hem 106 108 2 0, 29 hem, ± vlls calc 126 134 8 0, 17 0, 24 hem, vlls calc, py-cpy 158 160 2 0, 37 ±hem, vlls calc, spc, vlls/dis py-cpy 38 48 10 0, 23 0, 35 bx spc, ox Cu 80 84 4 0, 32 0, 35 bx spc-hem, ox Cu 194 196 2 0, 13 vlls spc, py-cpy 206 210 4 0, 24 0, 33 vlls spc, py-cpy 248 250 2 0, 28 stockw calc, act, py-cpy 314 316 2 0, 21 vlls spc, calc, hem, cl, py-cpy 324 326 2 0, 24 stockw spc, calc, hem, py-cpy 102 114 12 0, 20 0, 68 bx + stockw spc, lim, calc, ± ox Cu

COOPER GRADES AMADA SECTOR HOLE FROM TO STRETCH m Cu% Co_ppm_máx OBSERVATIONS SA 01 14 104 90 0, 40 1, 15 0, 143 257 Local Au anomalies SA 02 4 62 58 0, 40 1, 97 32 54 22 0, 41 0, 72 Weak Au anomalies 78 164 86 0, 22 0, 88 56 80 24 0, 48 1, 00 0, 199 Local anomalie: 0, 199 g/t Au 122 160 38 0, 28 0, 67 SA 05 0 0, 00 349 Hole parallel to veins, Py zone SA 06 42 104 62 0, 15 0, 36 Weak Au anomalies SA 07 0 0, 00 21 62 41 0, 10 0, 17 204 Ox. Cu 166 174 8 0, 12 0, 16 126 Py-Cpy 216 224 8 0, 44 0, 95 146 Py-Cpy 236 238 2 0, 30 428 Py-Cpy 258 278 20 0, 63 2, 93 229 Py-Cpy; vein hosted in intrusive 38 44 6 0, 12 0, 17 0, 138 vlls/fract + ox. Cu 58 68 10 0, 15 0, 23 405 stockw lim-hem-ox. Cu negros 78 88 10 0, 16 0, 25 17 bx tect, hem, ox. Cu 108 134 26 0, 98 0, 101 528 Au anomalies, stockw hem, ox. Cu 178 180 2 0, 13 203 vlls py (±cpy? ) 234 236 2 0, 49 433 bx hidrot, act, py ±cpy (Cc, Cv) (enr. 2º? ) SA 03 SA 04 BV 10 DD 05 BV 11 DD 06 Cu%_máx Au g/t_máx

COOPER GRADES AMADA SECTOR HOLE FROM TO STRETCH m Cu%_máx Au g/t_máx Co_ppm_máx OBSERVATIONS SA 08 4 70 66 0, 22 0, 41 lim, neotoc (black Cu ox. ) SA 09 0 64 64 0, 31 0, 55 neotoc, ox Cu, fault zone SA 10 0 49 49 0, 24 0, 64 fault, lim SA 11 0 60 60 0, 27 1, 26 ox Cu, lim SA 12 0 60 60 0, 32 1, 65 ox Cu SA 13 0 60 60 0, 80 8, 00 neotoc, ox Cu, crisoc SA 14 40 60 20 0, 24 0, 34 qtz-lim SA 15 0 29 29 0, 59 qtz-lim SA 16 4 54 50 0, 32 1, 98 ox Cu, lim SA 17 4 52 48 0, 22 0, 68 ox Cu SA 18 0 26 26 0, 54 1, 37 stockw lim, ox Cu SA 19 32 40 8 0, 12 0, 13 vlls qtz, lim SA 20 18 70 52 0, 31 0, 88 lim, ox Cu SA 21 0 43 43 0, 43 1, 10 lim, ox Cu SA 22 26 60 34 0, 21 0, 35 hem, lim, qtz SA 23 22 60 38 0, 40 0, 57 spc, mt, ox Cu SA 24 0 60 60 0, 30 0, 66 lim SA 25 6 10 4 0, 16 hem, ox Cu SA 26 44 46 2 0, 12 qtz, arc SA 27 0 10 10 0, 14 0, 22 lim

OTHER ELEMENTS COBALT - GOLD • • • Partial ICP analysis detect contents of Au-Co Golden intercept (yellow): – 24 m@0, 167 g/t Au (BV 10 DD 04) (Berta) – 4 m@0, 712 g/t Au (BV 11 DD 04) (W Brecha) Cobalt intercepto (blue) with average grades 118 to 316 ppm Co: – Brecha : BVRD 01, BV 10 DD 02 – Amada: BV 10 DD 05, BV 11 DD 06, BV 11 DD 07 – Berta: BVRC 02, BV 12 RC 06

OTHER ELEMENTS GOLD – COBALT - MOLIBDEN GOLD - COBALTO – MOLYBDENUM LOCAL VALUES HOLE Au g/t Co_ppm Mo_ppm SA-01 SA-02 SA-04 SA-05 SB-03 SB-04 SB-05 SB-06 SB-09 SB-12 SP-05 BVRD 01 0, 13 a 0, 14 0, 12 0, 2 0, 11 a 0, 34 0, 43 0, 10 a 0, 27 0, 13 a 0, 17 0, 14 0, 17 a 1, 31 120 a 217 181 a 349 130 a 222 154 a 849 110 11 a 39 47 a 79 11 a 25 BV 10 DD 05 0, 119 a 0, 219 BV 11 DD 06 0, 101 a 0, 138 BV 11 DD 07 0, 157 a 0, 174 BV 12 RC 04 0, 102 a 0, 202

EXPLORATION PROGRAM PROPOSITION • SELECTED EXPLORATION TARGETS : – 4 sectors of immediate interest in Brecha (2) and Amada(2) • PROPOSED EXPLORATION PROGRAM : – DDH holes of about 700 m long each(there is water in depth) • PROGRAM OBJECTIVES: – Brecha Sector: Recognize probable mineralization associated with IP and Gravimetric anomalies – Amada Sector: Recognize mineralized blocks • PROGRAM COSTS: – Approximate investment of US $ 1 M in platforms, drilling, geology, and mining property.

EXPLORATION PROGRAM PROPOSED TARGETS • TARGET 1 – East Brecha: 2 4 1 Gravimetric anomaly and mineralization of Cu -Co attached to Portezuelo fault • TARGET 2 – West Brecha: IP and 3 gravimetric anomalies, Cu mineralization • TARGETS 3 AND 4 – East Amada: Cu Mineralization associated with magnetic low and area of strong hydrothermal activity • Exploración: 4 DDH holes of 700 m each.

RECOMMENDED HOLES BRECHA – PAMPA NORTE • REC- BX 01 – Coord. : 7. 019. 750 N 389. 000 E – Azimut: N 60 – Inclination: 60° – Long: 650 -700 m • REC- BX 02 – Coord. : 7. 019. 700 N 388. 380 E – Azimut: N 60 – Inclination: 60° – Long: 650 -700 m

TARGETS 1 AND 2 BRECHA – PAMPA NORTE Target 1 – REC BX 1 Gravimetric anomaly, Cu-Au-Co towards Portezuelo fault Target 2 – REC BX 2 High IP anomaly, anom. gravimetric Mineralization Cu- (Au-Co) (BH-7)

TARGET 1 – REC BX 1 BRECHA – PAMPA NORTE

BLANCO 2 – REC BX 2 BRECHA – PAMPA NORTE

RECOMMENDED HOLES AMADA SECTOR 384. 500 385. 000 • REC- A 1 – Coord. : 7. 017. 778 N 384. 752 E – Azimut: N 360° – Inclination: 60° – Long: 650 -700 m • REC- A 2 – Coord. : 7. 017. 297 N 384. 651 E – Azimut: N 360° – Inclination: 60° – Long: 650 -700 m

TARGET 3 – REC A 1 AMADA SECTOR

BLANCO 4 – REC A 2 SECTOR AMADA

BUENAVENTURA PROJECT GENERAL DISTRIBUTION MINERALIZATION COBALTO GOLD IRON COOPER

GEOLOGICAL SCHEME IOCG TYPE DEPOSITS

BUENAVENTURA PROJECT Overview of the Buenaventura project with a view to the sectors: Amada (foreground), Pampa (intermediate alluvial plain) and Brecha.

BUENAVENTURA PROJECT Breccia sector: specularite breccia and copper oxidized

BUENAVENTURA PROJECT Berta mine: specularite breccia, actinolite, quartz, and Cu ox. Breccia Sector: specularite breccia, Cu ox. and fragments of altered rock

BUENAVENTURA PROJECT Overview of the hydrothermal alteration of the Amada sector

BUENAVENTURA PROJECT Amada mine, gallery by Fe-Cu vein Overburden with fragments of hematite, magnetite and Cu ox.