Avenida del Valle 601, Oficina 31, Ciudad Empresarial, Huechuraba Santiago Chile Telephone Nº (56 2) ; (56-2) Fax (56-2)

Transcription

1 DE RE METALLICA LEADER COMPANY IN TECHNOLOGICAL INNOVATION IN PROCESS ENGINEERING Avenida del Valle 601, Oficina 31, Ciudad Empresarial, Huechuraba Santiago Chile Telephone Nº (56 2) ; (56-2) Fax (56-2) Website

2 MISSION De Re Metallica Ingeniería Limitada, DRM, is a Chilean consulting company for industrial processes, created in August 1995 by outstanding professionals in the copper extractive metallurgy. Our mission is to advise companies in the mining and metallurgical field as well as other industrial activities, in a series of aspects such as: Project Engineering, New Process Development, Diagnosis of Industrial Operations, Metallurgical Auditing, Process Optimization and Control, Computational Code Development, Project Evaluation, Patenting Studies and Professional Training. Differentiating element compared to conventional engineering is the TECHNOLOGICAL INNOVATION component in all our work, evidenced through intensive use of Basic Sciences and Engineering Sciences aimed to solve the industrial problems presented to us. DRM has the response capacity of engineering companies with the deepness of a research centre or university.

3 OUR PERSONS Jorge Menacho Llaña Yadranka Zivkovic Domic : Outstanding Chilean professional in the mining industry. He was awarded as the Professional of the Year in 2005 by the Chilean Institution for Mining Engineers and the Ramón Salas Edwards Award to the Outstanding Contribution to Engineering published within years , distinction given by the Chilean Engineer Institution in His background includes basic sciences (B.Sc. Chemistry, University of Chile, 1972) and engineering sciences (D.Sc. Metallurgical Engineering, University of Concepción, Chile, 1985, and Post Doct at Pennsylvania State University, USA, ). Field of interest are Hydrometallurgy, Mineral Processing and Environment. He has been linked to several universities, the Mining and Metallurgical Research Centre (CIMM) and engineering companies. Since 1995 he holds the Technical Manager position at DRM. : Chemical Civil Engineer from the University of Concepción, Chile. She worked shortly for the University of Concepción, then for CIMM and DRM since She has been involved in a variety of projects mainly in the Hydrometallurgy field. Areas of interest are process math modeling for optimization and environment control and the study of chemical topics in SX, contaminant behavior and patenting studies. She is Senior Consultant and Operation Manager at DRM.

4 Patricio Chávez Espinoza : Metallurgical Civil Engineer from the University of Santiago, Chile. He has been involved in many optimization projects as well as metallurgical auditing. He is skilled in process analysis, dynamic modeling, optimization and code development. He is Process Engineer at DRM. Elvis Peñaloza Ortiz : Metallurgical Engineer from the National University San Agustín de Arequipa Perú, he also holds a technical degree in Informatic Systems from the System and Data Processing Institute IPSIPRODA, Perú. He has been involved in development of design and optimization computing codes as well as metallurgical process studies. He currently holds the Process Engineer position at DRM. Boris Merino Pulgar : Metallurgical Civil Engineer from the University of Concepción, Chile. He has been involved in many optimization projects as well as metallurgical auditing. He is skilled in process analysis, modeling and optimization.he has leaded the commissioning and start up of a new SX plant. He is Process Engineer at DRM

5 Guillermo Ávila Castillo : Metallurgical Civil Engineer from the University of Concepción, Chile. He has been involved in industrial optimization projects as well as metallurgical design. He is skilled in process analysis, modeling and optimization. He is Process Engineer at DRM. Daniel Jordán Paredes : Metallurgical Civil Engineer from the University of Santiago, Chile. He has been involved in industrial optimization projects as well as metallurgical design. He is skilled in process analysis, modeling and optimization. He is Process Engineer at DRM. BASIC ADMINISTRATIVE TEAM Natalia Mujica Neira Juan Garay Zelada Leonardo Garetto : Executive Secretary : General Accountant : Lawyer

6 WORKING FIELD DRM is highly skilled in process development, engineering studies and operational analysis with robust knowledge on basic and engineering sciences, much deeper than conventional engineering companies, for whom DRM use to be Consultant. Our knowledge on fundamentals allows to face any industrial process, but our experience is centered in Hydrometallurgy, Mineral Processing and Environmental Issues. We are expert in solving specific process problems and also in the overall optimization and control of industrial plants, strongly oriented toward immediate improvement of the business result, a highly valued feature in these high price days. How can we do this? By using our rich 35 years experience in process analysis and also by handling a battery of phenomenological models, most of them developed by ourselves, with intense use of transport phenomena, chemical kinetics, thermodynamics, reactor analysis, bioprocessing and other tools to model, simulate and optimize industrial operations. Specific skills supported by experience are listed below:

7 (I) Mineral Processing Blasting - Development of novel phenomenological models for granulometry estimation and further prediction of metal recovery at the concentrator operation. Crushing & Screening - Development of novel phenomenological models for optimization of crushing and classification in screens. - Design of industrial crushing plants assisted by phenomenological models. - Optimization of crushing plants assisted by static phenomenological models. - Control of crushing plants assisted by dynamic phenomenological models. - Training courses at specific companies. Rod and Ball Milling - Development and adoption of phenomenological grinding models (population balances) for optimization of industrial circuits. - Development of novel grinding-body wear model (population balances) for industrial optimization purposes. - Design and dimensioning of industrial grinding and classification circuits. - Optimization of industrial grinding and classification circuits. - Dynamic modeling of conventional mills for control purposes. - Procedure to estimate optimal ball make up at industrial plants. - Study on grinding media corrosion. - Training courses at specific companies.

8 SAG Milling - Development and adoption of phenomenological SAG mill model (population balances) for design and optimization issues. - Dimensioning and optimization of SAG mill circuits. - Evaluation of pre-crushing options to enhance capacity in SAG mill circuits assisted by phenomenological models. - Mass transport characterisation in SAG mills by means of radio tracer experiments. - Development of novel model for mass transport in SAG and ball mills (turbulent flow in porous media). - Development and application of methodologies to estimate SAG milling model parameters. - Development and application of scaling up techniques in SAG mills. - Dynamic modeling of conventional mills for control purposes. - Training courses at specific companies. Dry Milling - Development and adoption of phenomenological models for design and optimization of clinker cement dry grinding (air-swept mill models). - Dry cycloning of clinker cement for design and optimization purposes. Non Conventional Fracture Developments - Design and optimization of vertical mills. - Modelling of vertical mills. - Design and optimization of high pressure grinding rolls. - Mechanical and metallurgical modelling of high pressure grinding rolls. - Study on electro fracture of ores. - Development in centrifugal grinding device and process. - Development in ultrasonic grinding device and process.

9 Flotation - Development and adoption of phenomenological flotation models (kinetics model with distributed rate constants) to optimize industrial circuits. - Design and dimensioning of industrial flotation circuits. - Development and application of novel scale up flotation models. - Development of reagent formula in flotation systems. - Fluid dynamics and mass transport in different size cells (RTD tracer experiments). - Development of methodologies to scale up results from lab to industrial plant and pilot plant to industrial plant. - Dynamic modeling of industrial flotation plants for control purposes. - Flotation of clayish copper ores: bench scale tests and optimization at industrial level. - Effect of salty water (brines) in flotation response at lab and scale up to industrial scale. - Training courses at specific companies. Thickening - Process engineering in thickening operations. - Design and dimensioning of industrial thickeners. - Diagnosis of industrial thickening operations. - Metallurgical auditing. - Optimization and control of industrial thickeners. Filtration - Development of a novel phenomenological filtering dynamic model useful in design, optimization and control of industrial circuits (transport phenomena approach). - Process engineering in filtering operations. - Design and dimensioning of industrial filters. - Diagnosis of industrial filtering operations. - Metallurgical auditing. - Optimization and control of filtering systems. - Training courses at specific companies.

10 Drying - Process engineering in drying operations. - Design and dimensioning of industrial dryers. - Diagnosis of industrial operations. - Metallurgical auditing. - Optimization and control of industrial dryers. - Mass and energy balances in industrial dryers. - Solar drying of sulfide concentrates and anodic muds. - Mass transport studies in rotary dryers, assisted by RTD tracer experiments. (II) Hydrometallurgy Blasting - Development of novel phenomenological models for granulometry estimation and further prediction of metal recovery and acid consumption in ROM leach operations. Crushing & Screening - Development of novel phenomenological models for crushing and classification in screens. - Design of industrial crushing plants assisted by phenomenological models. - Optimization of crushing plants assisted by static phenomenological models. - Control of crushing plants assisted by dynamic phenomenological models. - Training courses at specific companies. Aglomeration - Development of novel phenomenological models to describe aglomeration in rotary drums (population balance models). - Design and optimization of aglomeration circuits by means of phenomenological models. - Optimization of lifters design and liquid addition system (acid and raffinate solutions) in industrial aglomerators.

11 - Determination of mass transport patterns through rotary aglomerators assisted by RTD tracer experiments and flow models. - Training courses at specific companies. Stacking - Development of novel physical models for ore stacking (granulometric classification by zones). - Optimization of industrial stacking operations by using phenomenological models. - Studies on segregation phenomena and further impact in the subsequent leach step. - Training courses at specific companies. Leaching - Development of novel phenomenological models for heap leaching, dump leaching and vat leaching. - Development and application of novel models for liquid flow in porous media and application to solve flow problems in industrial operations. - Design of industrial leach operations assisted by phenomenological models. - Optimization of leach cycles assisted by phenomenological models. - Development of novel procedures to scale up hydrodynamics and metallurgy results from column to industrial heap or dump lech operations. - Diagnosis and metallurgical auditing in heap and dump leach operations with the use of transport phenomena tools. - Set up of design parameters for heap and dump operations in phases of conceptual, basic and detail engineering projects. - Development and adoption of tools from the hydrology field to hydrometallurgy. - Development of leaching process for refractory, clayish and lowgrade ores. - Development of concentrate leaching processes.

12 - Development and application of a novel bioleaching model, which includes liquid transport, solute transport (copper, acid, ferrous and ferric iron), bacteria growth, air and oxygen transport and heat transport. - Training courses at specific companies. Solvent Extraction - Development of novel SX physical models for the copper exchange. - Design and optimization of industrial SX circuits assisted by phenomenological models. - Experimental and conceptual selection of optimal extractant formulae. - Evaluation and selection of industrial diluents. - Control of organic degradation problems at industrial scale. - Analytical service to determine the organic composition of industrial oxime solutions (aldoxime, ketoxime, aldehyde, ketone, tridecyl alcohol, diester TXIB, nitrated oxime, aldehyde and ketone). - Definition of restoring system for the organic phase by jeans of activated clays. - Fundamental adsorption studies of organic polar constituents on zeolite substrates, assisted by molecular modeling software. - Development and application of novel phenomenological model useful for design, optimization and control of impurities in SX electrolytes. - Diagnosis and control of the oxime nitration at industrial SX plants. - Development of a novel mixing and settling model useful to predict entraiments at the weir exit and also a novel procedure to estimate drop size distribution in mixer and settler and 3D velocity profile in the settler. - Design and optimization of picket fences in industrial SX plants, assisted by our own hydrodynamic code and CFD modeling. - Mixing characterisation by application of RTD tracer experiments. - Training courses at specific companies.

13 Electrowinning - Development of a novel phenomenological model for electrowinning (electrochemical kinetic approach). - Development of a novel phenomenological model for chlorine-gas evolution in industrial EW cells (electrochemical kinetic approach). - Chlorine control at EW tankhouse. - Electrochemical decomposition of oximes in EW circuits (polarisation curves, cyclic voltametry in non-aqueous media). - Control of acid aerosols in EW tankhouse (polypropilene spheres, extractor systems, chemical additives such as FC-1100 and saponines). - Development of a novel phenomenological model to estimate dispersion of acid mist in EW tankhouse (electrochemical model for the aid aerosol evolution and atmospheric dispersion model). - Flow pattern characterization at EW cells by jeans of RTD tracer experiments. - Auditing of engineering EW tankhouse projects. - Training courses at specific companies. (III) Environment Water Contamination - Dynamic modeling of water industrial dams to estimate underground infiltration by means of transport phenomena approach. - Stability of organic flotation reagents and infiltration to the sub soil. - Contamination of dam water with humic acids dissolved from the natural soil and effect in the flotation process. - Dynamic modeling of solute transport in the vadose zone, with/without chemical reaction to estimate contaminant spread out. - Transport of organic/inorganic species to estimate contamination in underground courses. - Scale up and forecast of impurity behavior at industrial mineral processing and leaching plants.

14 - Evaluation of the impact of a reverse osmosis plant in the quality of Molybdenum Plants effluents. - Heavy-metal precipitation with lime and disposal in dams. Air Contamination - Probability model to predict transport of paraffinic.contaminants through air. - Model to estimate chlorine gas evolution at industrial tankhouses. - Studies on air pollution control in crushing plants.

15 SELECTED CLIENTS Minera Lomas Bayas, Xstrata Copper Compañía Minera Doña Inés de Collahuasi, Anglo American Xstrata Copper - Mitsui Minera Escondida Limitada, BHP Billiton Empresa Mantos Blancos, División Manto Verde, Anglo American plc AngloAmerican Chile, Planta Las Tórtolas, Planta Los Bronces, Planta El Soldado, Anglo American plc Sociedad Punta del Cobre S.A. Codelco Norte, Gerencia de Hidrometalurgia Norte (ex Radomiro Tomic) Codelco Norte, Gerencia de Hidrometalurgia Sur (ex Chuquicamata) Codelco El Teniente, Subgerencia de Ingeniería Codelco Andina, Subgerencia de Ingeniería Minera Gaby, Codelco Chile Sociedad Contractual Minera El Abra, Codelco Chile, Freeport - McMoran Compañía Minera Quebrada Blanca, OUR Resources Chile Limitada BHP Billiton, BHP Chile Inc. Compañía Minera Cerro Colorado Ltda., BHP Billiton Minera Michilla, Antofagasta Minerals Minera Cerro Dominador S.A., Compañía Minera El Bronce Sociedad Química y Minera de Chile S.A. Cía. Minera Zaldivar, Barrica Chile Bechtel A.R.A. Arcadis Geotécnica Molycop CHile Cognis Chile Avecia Chile, Shell Chile S.A.I.C. Phillips Petroleum Westfalia Chile Refinería Petróleo de Concón, RPC.

16 PROFESSIONAL EXPERIENCE PROJECT : Diagnosis and Improvement of the Organic Quality at the Radomiro Tomic Solvent Extraction Plant COMPANY/YEAR : Codelco Chile, División Codelco Norte, 2008 PROJECT : Environmental Analysis of the Disposal of the HDS Mud-Plant in the Ovejería Dam. Use of Dynamic Simulation Tools COMPANY/YEAR : Codelco Chile, 2008 PROJECT : Diagnosis and Improvement of the Organic Quality at the Minera Escondida Limitada Solvent Extraction Plant COMPANY/YEAR : Minera Escondida Limitada, 2008 PROJECT : Optimization of the Current and Future Leaching and Cristallization Plant to Produce Copper Sulphate COMPANY/YEAR : Compañía Minera Quimal, 2008 PROJECT : Technical Assistance in the Commisioning and Start Up of the SX Plant at Minera Gaby COMPANY/YEAR : Minera Gaby S.A., 2008 PROJECT : Dynamic Simulation of the Compañía Minera Cerro Colorado Leach Operation with Run-of-Mine Granulometry COMPANY/YEAR : BHP Billiton, 2008 PROJECT : Estimation of Production Vector, Acid and Water Consumption in the Caserone ROM Dump Leach Project. Use of Dynamic Simulation Tools COMPANY/YEAR : Aker Kvaerner Chile, 2008 PROJECT : Estimation of the Water Quality Impact in the Metallurgical Response of the Concentrator and Moly

17 Plants. Part II: Exploration of Process and Operation Variables through Dynamic Simulation COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2007 PROJECT : Development and Application of an Overall Balance Model for the Novel Ferric Leach Procedure Developed at Codelco Chile RT Plant. Behavior of By- Products is Included. Dynamic Simulation Tools were Applied COMPANY/YEAR : Codelco Chile, División Codelco Norte, 2008 PROJECT : Exploration of Different Options within the Loa Production Plan by means of Dynamic Simulation COMPANY/YEAR : Compañía Minera Cerro Colorado, 2007 PROJECT : Scale Up and Estimation of Metallurgical Recoveries in the Regalito Leach Project COMPANY/YEAR : Lumina Copper Chile (Nippon Mining Co.), 2007 PROJECT : Estimation of the Water Quality Impact in the Metallurgical Response of the Concentrator and Moly Plants. Part I: Dynamic Simulation of Posible Scenary COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2007

18 PROJECT : Integral Water Balance and Physico Chemical Profile in the Concentrator and Osmosis Plant Effluents COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2007 PROJECT : Estimation of the Loa FY Production Plan through Dynamic Simulation COMPANY/YEAR : Compañía Minera Cerro Colorado, 2007 PROJECT : Diagnosis and Optimization of the San José Concentrator (crushing, grinding and flotation plants) COMPANY/YEAR : Pucobre, 2007 PROJECT : Diagnosis of the Heap Bioleaching Operation COMPANY/YEAR : Minera Zaldívar, 2007 PROJECT : Water Balance in the Cerro Colorado Industrial Operation COMPANY/YEAR : Compañía Minera Cerro Colorado, 2007 PROJECT : Integral Assistance to Improve Operacional Results at Compañía Minera Cerro Colorado COMPANY/YEAR : Compañía Minera Cerro Colorado, 2007 PROJECT : Hydrodynamic Characterization of the ROM Ore COMPANY/YEAR : Compañía Minera Zaldívar, 2007 PROJECT : Technical Analysis of the Crushing and Leaching Operations COMPANY/YEAR : Compañía Minera Zaldívar, 2007 PROJECT : Modelling and Simulation of Comminution Circuits Using the JK.SimMet Code (Pebbles Handling System Re-Powering, Conceptual Engineering) COMPANY/YEAR : SNC Lavalin, 2007

19 PROJECT : Technical Support to Claim the Insurance covering the Stockpile Accident May 2006 COMPANY/YEAR : Compañía Minera Zaldívar, PROJECT : Technical Assistance to Use the DRM LixRom Computational Code COMPANY/YEAR : Sociedad Contractual Minera El Abra, 2007 PROJECT : Modeling and Simulation of Comminution Circuits Using the DRM Simulating Code COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2007 PROJECT : Use of Dynamic Model to Estimate Future Budget at CMCC COMPANY/YEAR : Compañía Minera Cerro Colorado, 2007 PROYECT : Integral Assistance to Improve Operacional Results at Compañía Minera Escondida Limitada COMPANY/YEAR : Minera Escondida Limitada, 2007 PROJECT : Technical and Economical Audit to Santa Margarita Plant COMPANY/YEAR : Minera Cerro Dominador, 2007 PROJECT : Training in the Use of FilterSim Software (DRM property) COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2007 PROJECT : Metallurgical Assistance to Comissioning of the Chalcopyrite Pad Leach Pilot Plant COMPANY/YEAR : Codelco Chile, Andina Division, 2007 PROJECT : Gas Permeability of Ores in the Spence Project COMPANY/YEAR : BHP Billiton, 2007

20 PROJECT : Projection of Pilot Plant Results Using the BioLeach Code (DRM property) COMPANY/YEAR : Codelco Chile, Andina Division, 2007 PROJECT : Bench Marking on Reverse Flow SX Plants COMPANY/YEAR : Minera Gaby, 2006 PROJECT : Diagnosis on Residual Flotation Reagents at Las Tórtolas Plant COMPANY/YEAR : AngloAmerican Chile, 2006 PROJECT : Overall Water Balance and Physico-Chemical Profile of Patache Effluents COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2006 PROJECT : Preliminar Analysis of the Lipesed Coalescer at Compañía Mantos de la Luna S.A. COMPANY/YEAR : Codelco Chile, División Codelco Norte, 2006 PROJECT : Dynamic Simulation of Daily Results during the Ramp Up at Minera Gaby COMPANY/YEAR : Codelco Chile, Minera Gaby, 2006 PROJECT : Bench Marking on Evaporation Rate in Heap Leach Plants COMPANY/YEAR : Sociedad Minera El Abra, 2006 PROJECT : Workshop on the Use of the FilterSim Code (DRM Property) COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2006 PROJECT : Scale Up and Projection of Results in the Secondary Ripios Heap Leaching at Minera Gaby COMPANY/YEAR : Minera Gaby, 2006

21 PROJECT : Analysis of the Industrial Cleaner Filip Ser Circuit Sampling September 2006 COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2006 PROJECT : Fines Control at the CMCC Crushing Plant COMPANY/YEAR : Compañía Minera Cerro Colorado, 2006 PROJECT : Production Vector Dynamic Simulation with the Mine Program /04/09/2006, Stacking in 1, 2 and 3 Phases COMPANY/YEAR : Sociedad Minera El Abra, 2006 PROJECT : Proposal of Protocol to Check the Process Guarantee of the Bateman Gaby SX Plant COMPANY/YEAR : Minera Gaby, 2006 PROJECT : Oxide Leach Plants Bench Marking COMPANY/YEAR : Minera Escondida Limitada, 2006 PROJECT : Dynamic Simulation of the Minera Gaby Secondary Ripio Heap Leach Operation COMPANY/YEAR : Minera Gaby, 2006 PROJECT : Calculation of the Optimum Leach Cycle to Reach a Steady Concentration and the PLS Solution COMPANY/YEAR : Minera Gaby, 2006 PROJECT : Use of Tritium as Radiotracer to Characterize Solution Movement inside the Codelco Norte Leach Pads COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2006 PROJECT : Ramp Up Production Options in the Ripio Secondary Leaching ENMS/RCHU Project COMPANY/YEAR : Bechtel Chile, 2006

22 PROJECT : Global Assistance to the Pilot Plant Heap Leach Program with Future Ores COMPANY/YEAR : Compañía Minera Cerro Colorado, 2006 PROJECT : Process Options to Control the Statistical Variability in the Mine Grades COMPANY/YEAR : Codelco Chile, División Codelco Norte, 2006 PROJECT : Fines Control at the Crushing and Agglomeration Plants COMPANY/YEAR : Compañía Minera Cerro Colorado, 2006 PROJECT : Estimation of the Production Program for the Fiscal Year 2007 Assisted by Dynamic Simulation COMPANY/YEAR : Compañía Minera Cerro Colorado, 2006 PROJECT : Metallurgical and Hydrodynamic Simulation of Nitrate Caliche Leach Pads COMPANY/YEAR : Soquimich, 2006 PROJECT : Beneficiation of Blend of Mina Sur and Chuqui Ripios (RMS/RCH): Conceptual Engineering Project COMPANY/YEAR : Cade Idepe, 2006 PROJECT : Improvement in the Production Planning System at CMCC COMPANY/YEAR : Compañía Minera Cerro Colorado, 2006 PROJECT : Scale Up in the Recovery and Acid Consumption for Ripios Blends COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2006 PROJECT : Options to Maximize Throughput at the Crushing Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2005

23 PROJECT : Development of the Software Pro2. PTMP1.0 COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2005 PROJECT : Optimization of the Patache Industrial Filter Plant COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2005 PROJECT : Study on Grinding Media Corrosion and Impact on Floatability of Copper Sulfide Ores COMPANY/YEAR : Molycop, 2005 PROJECT : Bench Marking in Sulfide Concentrate Filter Plants COMPANY/YEAR : Minera Escondida Limitada, 2005 PROJECT : Use of Dynamic Simulation to Estimate Daily Production during the Ramp Up in the Sulfolix Project COMPANY/YEAR : Sociedad Minera El Abra, 2005 PROJECT : Technical and Economical Evaluation of Addition of a New Filter Unit at Puerto Patache COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2005 PROJECT : Development of a New Calculation System to Estimate Production Programs Assisted by Dynamic Simulation COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2005 PROJECT : Diagnosis of the Heap Leach Operation COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2005 PROJECT : Revision of the Drainage System and Heel Permeability at the PTMP Hep Leach Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2005 PROJECT : Metallurgical Optimization of the Crushing Plant (9,000 t/h capacity) COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2005.

24 PROJECT : Molybdenite Flotation Depression at Las Tórtolas Concentrator COMPANY/YEAR : Anglo American Chile, PROJECT : Lifter Design in Agglomerator Drums COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Hydrodynamic Optimization at the HidroSur SX Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2004 PROJECT : Pre Crushing Step in the SAG Circuit Conceptual Engineering Study COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Restoring of Physical Properties of the Organic Extractant at the SX HidroSur Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2004 PROJECT : Diagnosis of Current Situation at the LIX-SX Radomiro Tomic Industrial Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2004 PROJECT : Estimating Monthly Production Vector in the Secondary Leaching Project at Cerro Colorado COMPANY/YEAR : Compañía Minera Cerro Colorado, 2004 PROJECT : Metallurgical Analysis of Copper Recovery from the Rosario COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Purge Destine Optimization at SX Plant COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004

25 PROJECT : Metallurgical Support and Definition of the Optimal Leaching Sequency in the Secondary Dump Leaching Gaby Project COMPANY/YEAR : Arcadis Geotécnica, 2004 PROJECT : Diagnosis of the Cathode Contamination with Chloride COMPANY/YEAR : Minera Michilla, 2004 PROJECT : Development of a New Decanter Device for SX Plants COMPANY/YEAR : Compañía Minera Lomas Bayas, PROJECT : Recovery Optimization of CMDIC Heap leaching Operation Assisted by Process Simulator COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Development of a Process Simulator for the ROM Leach Operation COMPANY/YEAR : El Abra, 2004 PROJECT : Revision and Improvement in the Draining System at the Heap Leach Plant COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Diagnosis of the Current and Future Operation at the Concentrate CMDIC Filtering Plant COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Evaluation of a New Alternative to Remove Manganese from Tankhouse Electrolytes COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Metallurgical Consulting at Compañía Minera Cerro Colorado COMPANY/YEAR : Compañía Minera Cerro Colorado, 2004

26 PROJECT : Assistance to the CMCC Leach Operation COMPANY/YEAR : Compañía Minera Cerro Colorado, 2004 PROJECT : Mineralogy Characterization of Current and Future Ores COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2004 PROJECT : Metallurgical Audit of the Industrial Operation COMPANY/YEAR : Compañía Minera Cerro Colorado, 2004 PROJECT : Optimization of the Flotation Response of Clayish Sulfide Ores COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2003 PROJECT : Metallurgical Consulting for the Hydrometallurgy Management COMPANY/YEAR : Gerencia de Hidrometalurgia Norte, Codelco Norte Division, 2003 PROJECT : Diagnosis of the Current SX Plant Facing the New ENMS Project COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2003 PROJECT : Estimation of the Oxide Plant Capacity COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2003 PROJECT : Estimation of the Concentrator Plant Capacity COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2003 PROJECT : Optimization of the Leaching Operation COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2003 PROJECT : Trade Off: Organic Entrainment versus Throughput at the Industrial SX Plant COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2003

27 PROJECT : Development of a Computing Platform to Optimize Stacking and Irrigation Programs according to Budget COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2003 PROJECT : In Situ Impurity Precipitation from the Chuquicamata Ripio and Underlying Graves COMPANY/YEAR : Codelco Norte, Gerencia de Hidrometalurgia Sur, 2003 PROJECT : Improvement in Moly Recovery at Las Tórtolas Flotation Plant COMPANY/YEAR : Anglo American Chile, 2003 PROJECT : Alternatives to Control the Extractant Chemical Degradation at the SX Plant COMPANY/YEAR : Codelco Norte, Gerencia de Hidrometalurgia, 2003 PROJECT : Development of a Novel Picket Fence Distributor for SX Plants: Design, Construction and Installation COMPANY/YEAR : Cía. Minera Doña Inés de Collahuasi, 2003 PROJECT : Hydrodynamic Analysis of Solution Run-off through the ENMS Heaps COMPANY/YEAR : Codelco Norte, Gerencia de Hidrometalurgia, 2003 PROJECT : Study of Chemical Stability of Sulfosuccinate Diester COMPANY/YEAR : Codelco Norte, Gerencia de Hidrometalurgia, 2003 PROJECT : Recovery Scale up from Mini Column to Heap and Dump Leaching Operations COMPANY/YEAR : Codelco Norte, Gerencia de Hidrometalurgia, 2003 PROJECT : Dimensioning of a Plate Filter for the SX Plant COMPANY/YEAR : Codelco Chile, División Codelco Norte, Gerencia de Hidrometalurgia Sur, 2002

28 PROJECT : Infrared Analysis of Organic Solution at the SX Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2002 PROJECT : Dimensioning of a Plate Filter at the SX Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2002 PROJECT : A New Procedure to Remove Chloride in the Reducting Tower of Chuquicamata SX Plant COMPANY/YEAR : Codelco Chile, Codelco Norte Division, 2002 PROJECT : Effect of Intermittent Irrigation in the Copper Recovery, Acid Consumption and Heat Balance in Heap Bioleaching COMPANY/YEAR : Compañía Minera Cerro Colorado, 2002 PROJECT : Metallurgical and Geotechnical Analysis in Heap Remining Operations: Pads 15 and 16 COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2002 PROJECT : Design and Projection of Heap Leach Testing in the ROM Gaby Project COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2002 PROJECT : Metallurgical Audit: Upgrading of the SX-1 and SX-2 Solvent Extraction Plants COMPANY/YEAR : Minera Michilla, 2002 PROJECT : Integral Restoring of Properties of the SX Organic Phase COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2002 PROJECT : Hydrodynamic Characterization of Picket Fences at the SX Plant COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2002

29 PROJECT : Analysis of the New Organic Washing System at the SX Plant COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2002 PROJECT : Integral Assistance to the Heap Leach Operation COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2002 PROJECT : Historical Analysis of Codelco s Contribution to Development of the Modern Hydrometallurgy COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2001 PROJECT : Integral Procedure to Improve Efficiency in the SX Plant COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2001 PROJECT : Analysis of the Ripio Heap Leach Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2001 PROJECT : Metallurgical Optimization of the Radomiro Tomic Crushing Plant COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2001 PROJECT : Metallurgical Model to Estimate Production COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2001 PROJECT : Diagnosis of the Operation in the Dry and Wet Areas COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2001 PROJECT : Conceptual Engineering RT Plant Enlargement to 330 kt Cut/year Project (Process Discipline) COMPANY/YEAR : Outokumpu - Indepro, 2001 PROJECT : Experimental Study to Leach Ripios Mixes COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2001

30 PROJECT : Experimental Study in the Dump Leach Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2001 PROJECT : Revision of the Profile Engineering Chuqui North Project COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2001 PROJECT : Effect of the Inclined Base in the Solution Movement through Flotation Tailing Heap Leach Pilot Operation COMPANY/YEAR : Codelco Chile, El Teniente Division, 2001 PROJECT : Restoring Properties of the Organic Phase in the SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2001 PROJECT : Material Handling in the Industrial Test to Leach Old Tails Stocked in the Barahona Dam COMPANY/YEAR : Codelco Chile, El Teniente Division, 2001 PROJECT : Control of the Process Guarantee at the Industrial SX VSF Outokumpu Train D SX Plant COMPANY/YEAR : Codelco -Chile, Radomiro Tomic Division, 2001 PROJECT : Metallurgical Report ARI C99XL44 Checking the Stacking and Leach Design Parameters COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2001 PROJECT : Detail Engineering for the Radomiro Tomic Dump Leach Operation (Process Aspects) COMPANY/YEAR : Codelco -Chile, Radomiro Tomic Division, 2001 PROJECT : Diagnosis of the Industrial Hydrometallurgical Operation COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2001

31 PROJECT : Heap Leach Optimization at Minera Michilla Plant COMPANY/YEAR : Minera Michilla S.A., 2001 PROJECT : Assistance in the Selection of an Optimum Extractant Formula at the SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2001 PROJECT : Technical and Economical Feasibility to Recover Valuable By-Products from the RT Leach Solutions COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 2001 PROJECT : Column Testing to Leach Flotation Tailings COMPANY/YEAR : Codelco Chile, El Teniente Division, 2001 PROJECT : Optimization of the Crushing Plant COMPANY/YEAR : Minera Michilla S.A., 2001 PROJECT : Aglomeration of Flotation Tailing in Rotary Drums COMPANY/YEAR : Codelco Chile, El Teniente Division, 2001 PROJECT : Diagnosis of the Ripio Dump Leach Operation COMPANY/YEAR : Compañía Minera Disputada de Las Condes, 2001 PROJECT : RTD Analysis at the Grinding and Flotation Circuits COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2001 PROJECT : RTD Analysis in Mini-Box Heap Leaching Tests COMPANY/YEAR : Codelco Chile, División Chuquicamata, 2000 PROJECT : State-of-the-Art in the Technology to Agglomerate Ores with Flocculant Additives COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2000 PROJECT : Arsenic Handling in the RMSA Project COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2000

32 PROJECT : Analysis and Projection of the Ripio Mina Sur Column Leach Testing COMPANY/YEAR : Codelco -Chile, Chuquicamata Division, 2000 PROJECT : Bench Scale Flotation Study of RT Ores COMPANY/YEAR : Codelco Chile, División Radomiro Tomic, 2000 PROJECT : Chacterization of the Organic Solution Recovered from the Raffinate Pond COMPANY/YEAR : Compañía Minera Doña Inés de Collahuasi, 2000 PROJECT : Optional SX Circuits to Minimize Entrainments at the SX Plant COMPANY/YEAR : Compañía Minera Lomas Bayas, 2000 PROJECT : Improving the Leach Conditions at the Ripio Dump Leach Operation COMPANY/YEAR : Cía. Minera Disputada de Las Condes, 2000 PROJECT : Hydrodynamic Characterization of Fines in the RMSA Material COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2000 PROJECT : Heap Leach Scale Up Results from Column Tests COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2000 PROJECT : Effect of Flocculant Additives in the RMSA Ripio Heap Leach Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2000 PROJECT : Extractant Formula Selection for the Fourth Train at RT SX Plant COMPANY/YEAR : Codelco Chile, División Radomiro Tomic, 2000

33 PROJECT : Comparative Evaluation of Shell and Market SX Diluents COMPANY/YEAR : Shell Chile S.A.I.C., 2000 PROJECT : Hydrodynamic Analysis of the RMSA Heap Leach Industrial Operation Up to May 2000 COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 2000 PROJECT : Planning of Checking Testwork to Leach Old Tails from the Barahona Dam COMPANY/YEAR : Codelco Chile, El Teniente Division, 2000 PROJECT : Diagnosis of Measuring System and Procedure to Compute the Metallurgical Balance COMPANY/YEAR : Codelco -Chile, Radomiro Tomic Division, 2000 PROJECT : Analysis of Results from the Experimental Ripios Mina Sur Heap Leaching COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999 PROJECT : Optimization and Control of the Agglomeration of Ripios Mina Sur at Industrial Scale COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999 PROJECT : Improvement in the Heap Leach Operation COMPANY/YEAR : Codelco -Chile, Chuquicamata Division, 1999 PROJECT : Study to Maximize Throughput at the Industrial Crushing Plant COMPANY/YEAR : Cía. Minera Lomas Bayas, 1999 PROJECT : Control of Solid Contaminants at the Quebrada Blanca SX Plant COMPANY/YEAR : Cía. Minera Quebrada Blanca, 1999

34 PROJECT : Study to Reduce Degradation of the Organic Phase at the Quebrada Blanca SX Plant COMPANY/YEAR : Cía. Minera Quebrada Blanca, 1999 PROJECT : Calcium Removal from Molybdenum Concentrates at Las Tórtolas Concentrator COMPANY/YEAR : Cía. Minera Disputada de Las Condes PROJECT : Optimization of the Belt Transport and Stacking of Agglomerated Ores COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999 PROJECT : Diagnosis of the Current Operation at the Quebrada Blanca SX Plant COMPANY/YEAR : Cía. Minera Quebrada Blanca, 2000 PROJECT : Diagnosis of the Current Operation at the Quebrada Blanca SX Plant COMPANY/YEAR : Cía. Minera Quebrada Blanca, 1999 PROJECT : Development of Procedures and Protocols to Control the Experimental Ripio RMSA Heap Leach Test COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999 PROJECT : Control of Process Guarantee at Trains A-B-C SX VSF Outokumpu Plant COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1999 PROJECT : Comments to the SRK audit. Report on the Geometallurgical Plan COMPANY/YEAR : Codelco Chile, Chuquicamata Division, PROJECT : Evaluation of New Additives to Improve Solution Flow through the CMCC Pads COMPANY/YEAR : Cía. Minera Cerro Colorado, 1999

35 PROJECT : Effect of Magnafloc 333 Flocculant in the Hydrodynamic Response of Different Geometallurgical Unit Ores COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999 PROJECT : Development of an Improved System to Estimate Metallurgical Balances at Radomiro Tomic Plant COMPANY/YEAR : Codelco -Chile, Radomiro Tomic Division, 1999 PROJECT : Patent Review on Procedures to Clean Organics with Decanter Devices COMPANY/YEAR : Westfalia Chile, 1999 PROJECT : Kinetic of Decomposition of Aldoxime and Ketoxime Extractants at Lomas Bayas COMPANY/YEAR : Cía. Minera Lomas Bayas, 1999 PROJECT : Development of a Computational System to Estimate Long-Term Production at CMCC COMPANY/YEAR : Cía. Minera Cerro Colorado, 1999 PROJECT : Diagnosis of the Metallurgical Balance System at the CMDIC Concentrator Plant COMPANY/YEAR : Cía. Minera Doña Inés de Collahuasi, 1999 PROJECT : Simulation of Alternative SX Circuits to Maximize Production at Loma Bayas COMPANY/YEAR : Cía. Minera Lomas Bayas, 1999 PROJECT : Impact and Control of Nitrate in Leach Solutions at Radomiro Tomic COMPANY/YEAR : Codelco -Chile, Radomiro Tomic Division, 1999 PROJECT : Revision of the Irrigation System at the RMSA Heap Leach Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999

36 PROJECT : Behavior of Nitrate at the SX Lomas Bayas Plant COMPANY/YEAR : Cía. Minera Lomas Bayas, 1999 PROJECT : Use of Lagrange Multipliers to Estimate Material Balance at Leach Operations COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999 PROJECT : Nuclear Magnetic Resonance Analysis of Organic SX Solutions COMPANY/YEAR : Codelco -Chile, Radomiro Tomic Division, 1998 PROJECT : Study to Optimize Industrial Agglomerate Drums at the RMSA Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1998 PROJECT : Analysis of the Organic Phase at Minera Michilla SX Plant COMPANY/YEAR : Minera Michilla S. A., 1998 PROJECT : Control of the Chloride Transfer to the Electrolyte at the Radomiro Tomic SX-EW Plant COMPANY/YEAR : Zeneca, 1998 PROJECT : Organic Analysis of Extractant Solutions at Different SX Plants in Chile COMPANY/YEAR : Zeneca, 1998 PROJECT : Upgrading the Metallurgical Lab Facilities COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1999 PROJECT : Technical Analysis on Current Situation in the RMSA Experimental Pad COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1998

37 PROJECT : Ripio Characterization from the Cerro Colorado Hydrometallurgical Operation COMPANY/YEAR : Compañía Minera Cerro Colorado, 1998 PROJECT : Filtering of Organic and Kieselghur Mix in a Larox Unit COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1998 PROJECT : Control of Fine Particles and its Effect in the Heap Leach Operation at CMCC COMPANY/YEAR : Compañía Minera Cerro Colorado, 1998 PROJECT : Metallurgical Classification of the Mina Sur Ores COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1998 PROJECT : Chemical Transfer of Chloride via Oximes in the Copper Solvent Extraction COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1998 PROJECT : Basis to Develop an Integrated Information System COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1998 PROJECT : Development of a New Extractant Formula at the Chuquicamata SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1998 PROJECT : Study of the Composition of the Organic Phase at the RT SX Plant COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1998 PROJECT : Simulation of the Crushing Plant Period for Different Mixes of Oxide and Sulfide Ores COMPANY/YEAR : Compañía Minera Cerro Colorado, 1998

38 PROJECT : Metallurgical Consulting in the RAMS/RFMS Heap Leach Operation COMPANY/YEAR : Codelco -Chile, Chuquicamata Division, 1998 PROJECT : Evaluation of Westfalia Decanter as Alternative to Recover Organic Solution from Cruds in Copper SX Plants COMPANY/YEAR : Westfalia Separator, 1998 PROJECT : Simulation of the CMCC Crushing Plant with P 80 1/2 and 5/8 COMPANY/YEAR : Compañía Minera Cerro Colorado, 1998 PROJECT : Crushing Options for the SNSA Ore COMPANY/YEAR : Compañía Minera Cerro Colorado, 1998 PROJECT : Statistical Method to Estimate Copper Recovery in Vat Leaching Starting from the Forecast Laboratory Test COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1998 PROJECT : Procedure for Sampling the Feed Ore to Leaching Using the Ramsey System COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1998 PROJECT : Scale Up Flow Considerations in Heterogeneous Particle Beds COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1998 PROJECT : Bench Marking of the Grinding Media Market COMPANY/YEAR : Molycop, 1998 PROJECT : Exploring Flocculants Alternatives to Magnafloc 333 in Vat Leach Industrial Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1998

39 PROJECT : Peripherical Feed to Vat Leach Tanks COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1997 PROJECT : Study to Reduce Fines at the Crushing CMCC Plant COMPANY/YEAR : Compañía Minera Cerro Colorado, 1997 PROJECT : Particle Size Segregation Model in Ore Stacking Operations COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1997 PROJECT : Development of an Analytical Technique to Determine Polyacrylamide Residuals in Acid Solutions COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1997 PROJECT : Study to Optimize the Magnafloc 333 Preparation and Addition System in the Vat Leach Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1997 PROJECT : Technical and Economical Analysis of Using Magnafloc 333 at the Whole Hydrometallurgical Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1997 PROJECT : Analytical Service to Evaluate Solvent for SX Plants COMPANY/YEAR : Concón Oil Refinery, 1997 PROJECT : Technical Inspection to the Radomiro Tomic Pilot Plant COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1997 PROJECT : Study on Iodine Analytical Determination COMPANY/YEAR : Codelco Chile, Radomiro Tomic Division, 1997 PROJECT : NMR Analysis of Organics from the Low Grade Sulfide Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1997

40 PROJECT : Development of a New Extractant Formula at the Chuquicamata SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1997 PROJECT : Study to Reduce Crud Formation at the Mantos Blancos SX Plant COMPANY/YEAR : Empresa Minera Mantos Blancos S.A., 1997 PROJECT : Market Study for Solvent in the Mining Industry COMPANY/YEAR : Paréz y Alvarez Ingenieros Asociados Ltda., 1997 PROJECT : Evaluation of the ORFOM-SX12 Solvent COMPANY/YEAR : Interquímica, 1997 PROJECT : New Solvents for the Mining Industry COMPANY/YEAR : Concón Oil Refinery, 1996 PROJECT : Analysis of Critical Success Factors in the New CSM Process COMPANY/YEAR : Metaproject, División Andina 1996 PROJECT : Characterization of MOC 55TD Extractant Samples COMPANY/YEAR : Andean Mining & Chemicals Ltd., 1996 PROJECT : Comments on the Copper-Zinc Ore Processing at Minera Antamina, Perú COMPANY/YEAR : Cía. Minera Cerro Colorado, 1996 PROJECT : Final Simulations for the New Crushing Plant at Cerro Colorado COMPANY/YEAR : Cía. Minera Cerro Colorado, 1996 PROJECT : Environmental Analysis of the New "LR" Process in Codelco Chile, Andina Division COMPANY/YEAR : Codelco Chile, Andina Division, 1996

41 PROJECT : Study to Reduce Solution Impregnation in Drained Vat Leach Ripios COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1996 PROJECT : Exploring Study on Crushing Options in the Cerro Colorado Expansion COMPANY/YEAR : Compañía Minera Cerro Colorado, 1996 PROJECT : Study to Control the Solvent Evaporation at the SX Plant, "Processing of CMD Mine Waters", Conceptual Engng. Project COMPANY/YEAR : Compañía Minera Disputada de Las Condes, 1996 PROJECT : Study to Reduce the Agglomeration in the Copper Filtered Concentrate at Las Tórtolas Plant COMPANY/YEAR : Compañía Minera Disputada de Las Condes, Las Tórtolas Area, 1996 PROJECT : Study to Control the Acid Mist at the SX Plant, "Processing of CMD Mine Waters", Conceptual Engng. Project COMPANY/YEAR : Compañía Minera Disputada de Las Condes, 1995 PROJECT : Conceptual Study to Increase the Crushing Plant Capacity by Introducing a New Screening Station COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1995 PROJECT : RTD Study at the Flotation Tailing Barahona Dump Leaching COMPANY/YEAR : Codelco Chile, El Teniente Division, 1995 PROJECT : Diluents Evaluation for the Chuquicamata SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division,

42 PROJECT : Options to Implement the New Extractant Formula at the Chuquicamata SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1995 PROJECT : Side Effect in the SX Plant due to Use of Wetting Agents in the Leach Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1995 PROJECT : Development of a Grinding-Flotation Flowsheet for the Minera La Patagua Plant COMPANY/YEAR : Compañía Minera La Patagua, 1995 PROJECT : Optimization of the Industrial Grinding Circuit at Minera Tocopilla COMPANY/YEAR : Compañía Minera Tocopilla, 1995 PROJECT : Revision of Design and Operational Conditions at Las Tórtolas Black Acid Neutralization Plant COMPANY/YEAR : Compañía Minera Disputada de Las Condes, 1995 PROJECT : Flocculant Identification at the Chuquicamata SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1995 PROJECT : Study to Control the Iron Precipitation in the Heap Leach Operation COMPANY/YEAR : Compañía Minera Cerro Colorado, 1995 PROJECT : Hydraulic and Metallurgical Characterization in Box Leach Experiments COMPANY/YEAR : Codelco Chile, Chuquicamata Division through CIMM, 1995 PROJECT : Conceptual Evaluation of Sprinkler Evaporation to Concentrate PLS Solutions COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1994

43 PROJECT : Defense of Application Patents Nº , and Codelco Chile Property COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1994 PROJECT : Development of an Isobaric Percolator to Simulate Leaching under Load COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1994 PROJECT : RTD Measurements in Leach Boxes and Scale Up to the Industrial Dump Operation COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1994 PROJECT : Extractant Evaluation at the SX Plant COMPANY/YEAR : Codelco Chile, Chuquicamata Division, 1994 PROJECT : Development of a New Hydro Method to Enrich and Purify Copper Concentrates COMPANY/YEAR : Codelco Chile, Chuquicamata Division, PROJECT : Evaluation of the New Chuquicamata Mesh Filter to Clean Aqueous SX Solutions COMPANY/YEAR : Codelco Chile, Chuquicamata Division, PROJECT : Marketing and Technology Sale of the Mechanical Crud Rupture to Recover Organic Solution at SX Plants COMPANY/YEAR : Codelco Chile, División Chuquicamata, PROJECT : Study to Increase Molibdenite Recovery at the Concentrator Plant COMPANY/YEAR : FONDEF and Codelco Chile, Andina Division, PROJECT : Development of an Ultrasonic Comminuting Device for the Ore grinding COMPANY/YEAR : FONDEF,