Tabla - Comparacion Estudios Ingenieria

7/29/2019 Tabla - Comparacion Estudios Ingenieria

1/6

DESCRIPTIONConceptual

Sco in Stud

Prefeasibility

Stud

Feasibility

StudINTRODUCTION

Location, Topography and Climate

Site Location Map Basic mapPreliminary map showing claims and

boundaries

Detailed map showing a

boundaries

Topography Map Basic map showing site topographyPreliminary map showing site

topographic features

Detailed topographic map

verified with ground contro

Property Ownership Review of property leaseReview of property lease; claims list

provided; mineral rights known

Property lease and rights

controlled; claims list and

mineral rights secured

Current Status and History

Historical Chronology Basic presentat ion Full presentation Detailed presentationPast Production (if any) Basic presentation Full presentation Detailed presentation

EXPLORATION AND GEOLOGY

Geologic Description

Review Preliminary review Preliminary site-specific analysis Detailed site-specific analy

Data Posting Review of available existing mapsDetailed geologic mapping with cross-

sections

Deposit well-defined

dimensional mapping, g

long sections, level plans

Geologic Assessment Preliminary Basic assessment and review

Detailed assessment of

contacts, alteration,

deposit trends

Mineralogical Sampling & Analysis Limited sampling; preliminary assessmentPreliminary mineralogical sampling and

analysis; preliminary mineralogic study

Detailed mineralogical

mapping; detailed mineralo

Drilling, Sampling and Assaying

Drill Hole Parameters Wide spaced drilling as appropriate Initial in-fills of wide spaced drilling;preliminary grid patterns

Close spaced drilling on

pattern to support calc

categories

Underground Drilling Review of existing data Drilling if accessible Detailed drilling if accessib

Samples Preliminary; some outcrop samplesGeophysical and geotechnical sampling;

test pitsAll sampling programs com

Drilling/Assay DataPreliminary check of exist ing drill hole

data

Check of drill holes (coordinates,

elevations, angles, etc.), check assays,

angled hole vs vertical hole comparison;

assay flow diagram, dependable

database

Check of drill holes

elevations, angles, etc.),

angled hole vs vertical ho

assays, angled hole vs

comparison, twin hole drill

diagram; validated databas

Condemnation Drilling None NoneAreas under waste dump

plant drilled

RESOURCES AND RESERVES (Internationally Recognized Standards [see note 1])

Resources Indicated and Inferred Measured, Indicated, and Inferred Indicated and Measured

Geologic Controls AssumedEstablished from geologic data and/or

variogramsWell established from geol

Tonnage Factors Preliminary assessment if available Preliminary analysis and determinations Detailed analysis and dete

Statistical Analysis Not performed Preliminary analysis and determinations Detailed analysis and dete

Geostat istical Analysis Not performed Preliminary analysis and determinations Detailed analysis and dete

Reserves Only resources estimated Proven and Probable Proven and Probable

Calculation Parameters Usually no reserves are estimated Known or estimated Detailed analysis and dete

Cutoff Grade (COG) Equations Usually no reserves are estimatedCalculated from floating cone

parameters

Optimized using min

parameters

MINING

Mining MethodAssumed between open pit and

underground

Specific method identified Method and mine plan fina

Open Pit Mine Plan

Pit Slopes AssumedPreliminary estimates by rock type and

basic geotechnical data

Defined by geotechnica

structural mapping and

holes

Pit Design Simple outline of final pit

Preliminary pit design from optimized

analysis; preliminary haulroad

incorporated

Detailed pit designs with

access for equipment oper

Waste Dumps Simple outline of final dumps

Preliminary design for total waste

tonnage; incremental and final outline of

dumps

Dump sites identified from

data; final waste tonnag

with incremental phases, y

dump outlined

Underground Mine PlanAssumed mining system; general outline

of mine plan and development

Preliminary mining system identif ied

from geologic and geotechnical data

preliminary outline of mine plan and

development including mine access

Specific mining system

geologic and geotechnica

outline of mine plan and

including mine access

Production ScheduleBasic schedule based on assumed mine

life

Yearly and mine life ore and waste

tonnages and grade

Detailed annual schedules

product quality and waste

grades

Capital Cost EstimateOrder-of-magnitude, factored or from

similar operations

Preliminary equipment list; budget or

historical price quotes; some factoring

Detailed equipment list; fir

for all major equipment ite

items identified

Operating Cost EstimateOrder-of-magnitude; factored or from

similar operations

Quantif ied estimates for labor, power

and consumables; budget or historical

price quotes for unit prices; some

factoring

Detailed engineering estim

area based on quotes and

Minimum Report Contents for Engineering Studies


2/6

PROCESSING

Ore Sampling and Test Work

Minimal sampling; conduct lab bench

scale process characterization tests on

collected samples (if available)

Sampling of core; preliminary benchscale testing to determine preliminary

recoveries, ore characterization and

processing parameters for f low sheet

development

Sampling of core for dzones; confirm

comprehensive ben

program to determ

ore/product characteriza

processing parameters

Process Engineering and Design

Production Rate and Product(s)First estimate of production rate and

product(s)

Preliminary mining and processing rates

and plant product(s)

Fixed mining and proce

plant product(s)

Design Basis Preliminary using factored estimates

General design basis; preliminary

engineering drawings; trade-off studie

optional

Complete design

engineering drawing

complete; trade-off stud

Design Concept

Outline of design criteria and

specifications incorporating area/regional

climatic conditions

Design criteria established for

construction site incorporating known

site climatic conditions

Design specificatio

incorporating known

conditions

Process Description GeneralNarrative; 1 to 2% of detail engineering

complete

Detailed; 5 to 15% of d

complete

Layout

Approximate geographic locations and

site map; no general arrangement

drawings

Optimization of facility locations on site

map showing topography; simple

general arrangement drawings of major

equipment items

Exact geographic locati

with topography; de

arrangement drawings;

all facilities

Flow SheetsAssumed flow sheet from known

processes; simple block diagram

Establishment of probable flow sheet

from preliminary test work data; major

process flow diagrams; initial

determinations of material and heat

balances.

Detailed flow shee

comprehensive ben

program, detailed

diagrams for all proces

and heat balances finaliz

Civil Work

Rough topographic maps; no soil

conditions considered or quantities

estimated

Rough topographic maps; soil conditions

report for foundation determinations;

basic preliminary quantities

Detailed togographic

conditions identified

design, loadings and qua

Equipment Specifications Major equipment items listed

Preliminary listing of major equipment

items with initial sizings andspecifications

Complete listing of m

items with detailedspecifications

Architectural None Sketches Exterior elevations only

Piping/HVAC None Preliminary P&ID Major P&ID

Electrical Distribution None Basic one-line diagram All design one-line diagra

Motors None General descriptionDetailed list of maj

horsepower

Instrumentation None General description Detailed list of compone

INFRASTRUCTURE

FacilitiesGeneral overview with types of support

facilities described

All required support facilities identified,

sizes and quantities estimated

Facilities General overv

support facilities descr

support facilities ident

quantities estimated

support facilit ies ident

costed

Communications Communications requirements identified Communications systems study

Communications

requirements identified

systems study Commun

and standards known

PowerOverview of power availability and

regional unit power costs

Power sources and requirements

identified; unit costs obtained from power

source

Power requirements

derived from detailed e

unit costs from quotes

HYDROLOGY

Water Sources Estimated using regional data Preliminary hydrology study

Water Sources Estimat

data Preliminary hydrolo

water source identified

Water Usage Factored plant volume and unit costsRequired plant water volumes and unit

costs estimated

Requisite plant volume

derived from

engineering/geotechnica

Dewatering Dewatering parameters identified Dewatering parameters estimated Dewatering parametersplan defined

ENVIRONMENTAL

Setting

Preliminary evaluation of project setting

for potentially significant environmental or

permitting constraints for site data

Preliminary evaluation of the project's

impact on the environment; schedule of

environmental and/or other permitting

requirements; evaluate project setting

for potentially significant environmental

and/or permitting constraints from site

data

Characterization of a

potential impacts on t

finalize schedule of envi

other permitting require

project setting for pote

environmental and/

constraints

Data

Collect and review all available, existing

data for environmental studies

assessments or audits; regulatory

inspections, waste handling practices,

management plans, and all applicableenvironmental laws and regulations; no

social, training or safety programs

identified

Collect and review available

environmental data from existing

databases for environmental studies,

assessments or audits; regulatory

inspections,

waste handling practices; managementplans; and all applicable environmental

laws and regulations; plans; initiate

baseline data gatherin social, training,

and health /safety programs identified

All requisite environm

project are identified; s

analyses are complete

of the type, scope a

producing environm

government reports;gathering and evaluat

environmental condition

and health/safety progra

confirmed

EIS/EA None Draft EIS/EA initiatedDraft EIS/EA submitte

authorities

Reporting and PlansConceptual plans for managing any

identified environmental issues

Preparation of environmental plans and

monitoring programs; preliminary

sediment and erosion control plan;

conceptual reclamation plan; evaluation

of acid rock drainage; geotechnical

stability review of waste dumps and

tailings dam; preliminary impact

mitigation plan; preliminary spill andemergency response plan

Environmental characte

project design; environm

monitoring programs

sediment and erosion

management plan finali

hazardous wastes;

mitigation plan; geote

analysis of all major

reclamation plan; finalrock drainage; fina

emergency response pla

Monitoring Not consideredOutline of a site environmental

monitoring planComplete environmenta

PERMIT REQUIREMENTS General overviewComprehensive overview and listing of

required permits

Detailed evaluation o

environmental and

requirements and sched

operating license


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PROJECT DEVELOPMENT SCHEDULE

Development Plan Development period and mine lifeestimated

Development period and overallschedule estimated; mine life

determined development schedule set

Detailed development scknown; development sch

Project Master Schedule

Estimated showing start and end of

construction; Gantt bar chart of major

work elements

Gantt bar chart with overall time frames;

schedule outline for detailed engineering;

QA/QC program outlined; preliminary

construction schedule; preliminary

project execution plan

Gantt bar chart with ove

and project flow pla

project level schedule

deliverables and detai

CP schedule; maj

identified; project control

QA/QC and safety pr

preliminary project pro

project design basis fina

CAPITAL COST ESTIMATE

Basis

Civil Structural

Architectural

Piping/HVAC

Electrical

Instrumentation

Construction Labor

Construction Labor Productivity

Material Volumes/Amounts

Material/Equipment Pricing

Infrastructure

ContractorsIncluded in unit cost or as a percentage of

total cost

Percentage of direct cost by cost area

for contractor; historic for subcontractors

Written quotes from

subcontractors

EPCMPercentage of estimated construction

costPercentage of detailed construction cost Calculated estimate from

Pricing

FOB mine site including all taxes and

duties

FOB mine site including all taxes and

duties

FOB mine site includin

duties

Owner's Historic estimateEstimate from experience factored for

similar project

Estimate prepared fro

based budget

Environmental Compliance Factored from historic experienceEstimate from experience factored for

similar project


based budget for design

specific permit requirem

Escalation Typically not consideredBased on company's current budget

percentageBased by cost area with

Working Capital Factored from historic experienceEstimate from experience factored for

similar project


based budget

Accuracy +-50% +/- 25% +/- 15%

Contingency 25% 15% 10%

OPERATING COST ESTIMATE

Basis Order-of-Magnitude estimateEstimates for unit rates and quantified

estimates with some factoring

Detailed from zero

minimal factoring

Operating Quantities General Quantified by estimates with somefactoring

Detailed estimates

Unit Costs Historic unit costs and factoringEstimates for labor, power and

consumables; some factoring

Letter quotes from v

factoring

Accuracy +/- 35% +/- 25% +/- 15%

ECONOMIC EVALUATION

Financial AnalysisPreliminary assessment of principal

economic parameters

Assessment of the principal economic

parameters

Full assessment of all p

parameters

Commodity Price(s)Estimated based on 3yr average

minimum

Estimated based on 3yr average

minimum

Estimated based on

minimum or detailed ma

Royalties and Taxes Preliminary assessment Preliminary analysisDetailed analysis with

opinion

Smelting, Refining and Freight Historic data Budgetary quotes Firm quotes

Cash Flow Analysis Simple cash flow Preliminary cash flow Formal, detailed cash flo

Economic Criteria Simple IRR and NPV (pre- and after-tax)Preliminary IRR and NPV (pre- and after

tax)

Fully defined IRR, N

payback period (pre- andSensitivity Analysis

Basic analysis to minimal amount of

project variables

Preliminary to selected key project

variables

Numerous analysis to

variables

RISK EVALUATION

Risk Assessment General overview Fatal flaw analysisFormal Monte Carlo a

flaw analysis

ProjectPreliminary overview of geology,

engineering, and environmental

Preliminary environmental, country,

permitting, technology, and business;

detailed geology and engineering

Detailed geology,

environmental, legal, pe

technology, business, an

Note 1: Internationally Recognized Standards include:

1. Canadian National Instrument 43-101 and 43-101 CP.

2. Australiasian Code for Reporting of Mineral Resources and Ore Reserves - prepared by the Joint Ore Reserve Committed (JORC)

3. U.S. Securities & Exchange Commission Industry Guide 7

4. SME Guide for Reporting Exploration Information, Mineral Resources and Mineral Reserves

Order-of-magnitude based historic data

or factoring

Estimates from historical factors,

percentages and vendor quotes based

on materials volumes

Detailed from estimates

to 25% complete; multip


4/6


(Scoping Study)

Prefea

StINTRODUCTION

Location, Topography and Climate

Site Location Map Basic map Preliminary map showing claims and bound

Topography Map Basic map showing site topography Prel iminary map showing site topographic f

Property Ownership Review of property lease Review of property lease; claims list provide


Historical Chronology Basic presentation Full presentation

Past Production (if any) Basic presentation Full presentation



Review Preliminary review Preliminary site-specific analysis

Data Posting Review of available existing maps Detailed geologic mapping with cross-secti

Geologic Assessment Preliminary Basic assessment and review

Mineralogical Sampling & Analysis Limited sampling; preliminary assessment Preliminary mineralogical sampling and an


Drill Hole Parameters Wide spaced drilling as appropriate Initial in-fills of wide spaced drilling; prelimin

Underground Drilling Review of existing data Drilling if accessible

Samples Preliminary; some outcrop samples Geophysical and geotechnical sampling; te

Drilling/Assay Data Preliminary check of existing drill hole dataCheck of drill holes (coordinates, elevation

vs vertical hole comparison; assay flow dia

Condemnation Drilling None None

RESOURCES AND RESERVES (Internationally Recognized Standards [see note 1])

Resources Indicated and Inferred Measured, Indicated, and Inferred

Geologic Controls Assumed Established from geologic data and/or vario

Tonnage Factors Preliminary assessment if available Preliminary analysis and determinations

Statistical Analysis Not performed Preliminary analysis and determinations

Geostatistical Analysis Not performed Preliminary analysis and determinations

Reserves Only resources estimated Proven and Probable

Calculation Parameters Usually no reserves are estimated Known or estimated

Cutoff Grade (COG) Equations Usually no reserves are estimated Calculated from floating cone parameters

MINING

Mining Method Assumed between open pit and underground Specific method identified

Open Pit Mine Plan

Pit Slopes Assumed Preliminary estimates by rock type and bas

Pit Design Simple outline of final pit Preliminary pit design from optimized analy

Waste Dumps Simple outline of final dumps Preliminary design for total waste tonnage;

Underground Mine Plan Assumed mining system; general outline of mine plan and developmentPreliminary mining system identified from

outline of mine plan and development inclu

Production Schedule Basic schedule based on assumed mine life Yearly and mine life ore and waste tonnage

Capital Cost Estimate Order-of-magnitude, factored or from similar operations Preliminary equipment list; budget or histor

Operating Cost Estimate Order-of-magnitude; factored or from similar operationsQuantif ied estimates for labor, power an

quotes for unit prices; some factoring

PROCESSING

Ore Sampling and Test WorkMinimal sampling; conduct lab bench scale process characterization tests on collected

samples (if available)

Sampling of core; preliminary bench scale

ore characterization and processing param


Production Rate and Product(s) First estimate of production rate and product(s) Preliminary mining and processing rates an

Design Basis Preliminary using factored estimates General design basis; preliminary engineer

Design ConceptOutline of design criteria and specif ications incorporating area/regional climatic

conditions

Design criteria established for construct

conditions

Process Description General Narrative; 1 to 2% of detail engineering com

Layout Approximate geographic locations and site map; no general arrangement drawings Optimization of facil ity locations on sitearrangement drawings of major equipment

Flow Sheets Assumed flow sheet from known processes; simple block diagramEstablishment of probable flow sheet from

flow diagrams; initial determinations of mat

Civil Work Rough topographic maps; no soil conditions considered or quantities estimatedRough topographic maps; soil conditions

preliminary quantities

Equipment Specifications Major equipment items listed Preliminary listing of major equipment item

Architectural None Sketches

Piping/HVAC None Preliminary P&ID

Electrical Distribution None Basic one-line diagram

Motors None General description

Instrumentation None General description

INFRASTRUCTURE

Facilities General overview with types of support facilities described All required support facilities identified, size

Communications Communications requirements identified Communications systems study

Power Overview of power availability and regional unit power costs Power sources and requirements identified

HYDROLOGY

Water Sources Estimated using regional data Preliminary hydrology study

Water Usage Factored plant volume and unit costs Required plant water volumes and unit cos

Dewatering Dewatering parameters identified Dewatering parameters estimated

ENVIRONMENTAL

SettingPreliminary evaluation of project setting for potentially significant environmental or


Prel iminary evaluation of the project's

environmental and/or other permitting r

potentially significant environmental and/or

Data

Collect and review all available, existing data for environmental studies assessments or

audits; regulatory inspections, waste handling practices, management plans, and all

applicable environmental laws and regulations; no social, training or safety programs

identified

Col lect and review available environm

environmental studies, assessments or aud

waste handling practices; management p

and regulations; plans; initiate baseline dat

programs identified

EIS/EA None Draft EIS/EA initiated

Reporting and Plans Conceptual plans for managing any identified environmental issues

Preparation of environmental plans and

and erosion control plan; conceptual r

drainage; geotechnical stability review of w

impact mitigation plan; preliminary spill and

Minimum Report Contents for Engineering Studies


5/6


(Scoping Study)

INTRODUCTION

Location To o ra h and Climate

Site Location Map Basic map Preliminary map showing

Topography Map Basic map showing s ite topography Preliminary map showing

Property Ownership Review of property lease Review of property lease;


Historical Chronology Basic presentation Full presentation

Past Production (if any) Basic presentation Full presentation



Review Preliminary review Preliminary site-specific aData Posting Review of available existing maps Detailed geologic mapping

Geologic Assessment Preliminary Basic assessment and re

Mineralogical Sampling & Analysis Limited sampling; preliminary assessment Preliminary mineralogical


Drill Hole Parameters Wide spaced drilling as appropriate Initial in-fills of wide space

Underground Drilling Review of existing data Drilling if accessible

Samples Preliminary; some outcrop samples Geophysical and geotech

Drilling/Assay Data Preliminary check of existing drill hole dataCheck of drill holes (coor

vertical hole comparison;

Condemnation Drilling None None RESOURCES AND RESERVES (Internationally Recognized Standards [see note 1])

Resources Indicated and Inferred Measured, Indicated, and

Geologic Controls Assumed Established from geologic

Tonnage Factors Preliminary assessment if available Preliminary analysis and d

Statistical Analysis Not performed Preliminary analysis and d

Geostatistical Analysis Not performed Preliminary analysis and d

Reserves Only resources estimated Proven and Probable

Calculation Parameters Usually no reserves are estimated Known or estimated

Cutoff Grade (COG) Equations Usually no reserves are estimated Calculated from floating c

MINING

Mining Method Assumed between open pit and underground Specific method identified

Open Pit Mine Plan

Pit Slo es Assumed Preliminary estimates by

Pit Design Simple outline of final pit Preliminary pit design from

Waste Dumps Simple outline of final dumps Preliminary design for tota

Underground Mine Plan Assumed mining system; general outline of mine plan and development Preliminary mining systeoutline of mine plan and d

Production Schedule Basic schedule based on assumed mine life Yearly and mine life ore a

Capital Cost Estimate Order-of-magnitude, factored or from similar operations Preliminary equipment list

Operating Cost Estimate Order-of-magnitude; factored or from similar operationsQuantified estimates for l

for unit prices; some facto

PROCESSING

Ore Sampling and Test WorkMinimal sampling; conduct lab bench scale process characterization tests on collected

samples (if available)

Sampling of core; prelimin

characterization and proc


Production Rate and Product(s) First estimate of production rate and product(s) Preliminary mining and pr

Design Basis Preliminary using factored estimates General design basis; pre

Design Concept Outline of design criteria and specifications incorporating area/regional climatic conditionsDesign criteria establis

conditions

Process Description General Narrative; 1 to 2% of deta

Layout Approximate geographic locations and site map; no general arrangement drawingsOptimizat ion of facility

arrangement drawings of

Flow Sheets Assumed flow sheet from known processes; simple block diagramEstablishment of probabl

diagrams; initial determina

Civil Work Rough topographic maps; no soil conditions considered or quantities estimatedRough topographic map

preliminary quantities

Equipment Specifications Major equipment items listed Preliminary listing of majo

Architectural None Sketches

Piping/HVAC None Preliminary P&ID

Electrical Distribut ion None Basic one-line diagram

Motors None General description Instrumentation None General description

INFRASTRUCTURE

Facilities General overview with types of support facilities described All required support facilit

Communications Communications requirements identified Communications systems

Power Overview of power availability and regional unit power costs Power sources and requi

Minimum Report Contents for Engineering


6/6

DESCRIPTION Conceptual (Scoping Study) Prefeasibility

HYDROLOGY

Water Sources Estimated using regional data Preliminary hydrology stud

Water Usage Factored plant volume and unit costs Required plant water volu

Dewatering Dewatering parameters identified Dewatering parameters es

ENVIRONMENTAL

SettingPreliminary evaluation of project setting for potentially significant environmental or


Preliminary evaluation o

environmental and/or o

potentially significant envi

Data

Collect and review all available, existing data for environmental studies assessments oraudits; regulatory inspections, waste handling practices, management plans, and all

applicable environmental laws and regulations; no social, training or safety programs

identified

Collect and review av

environmental studies, as

waste handling practices;

regulations; plans; initiat

programs identified

EIS/EA None Draft EIS/EA initiated

Reporting and Plans Conceptual plans for managing any identified environmental issues

Preparation of environme

erosion control plan; co

geotechnical stability rev

mitigation plan; preliminar

Monitoring Not considered Outline of a site environm

PERMIT REQUIREMENTS General overview Comprehensive overview

DESCRIPTION Conceptual (Scoping Study) PrefeasibilitPROJECT DEVELOPMENT SCHEDULE

Development Plan Development period and mine life estimatedDevelopment period and

schedule set

Project Master Schedule Estimated showing start and end of construction; Gantt bar chart of major work elements

Gantt bar chart with ov

QA/QC program outline

execution plan

CAPITAL COST ESTIMATE

Basis

Civil Structural

Architectural

Piping/HVAC

Electrical

Instrumentation

Construction Labor

Construction Labor Productivity

Material Volumes/Amounts

Material/Equipment Pricing

Infrastructure

Contractors Included in unit cost or as a percentage of total cost Percentage of direct cost

EPCM Percentage of estimated construction cost Percentage of detailed co

Pricing FOB mine site including all taxes and duties FOB mine site including a

Owner's Historic estimate Estimate from experience

Environmental Compliance Factored from historic experience Estimate from experience

Escalation Typically not considered Based on company's curr

Working Capital Factored from historic experience Estimate from experience

Accurac +-50%

Contingency 25%

OPERATING COST ESTIMATEBasis Order-of-Magnitude estimate Estimates for unit rates an

Operating Quantities General Quantified by estimates w

Unit Costs Historic unit costs and factoring Estimates for labor, powe

Accuracy +/- 35%

ECONOMIC EVALUATION

Financial Anal sis Preliminary assessment of principal economic parameters Assessment of the princip

Commodity Price(s) Estimated based on 3yr average minimum Estimated based on 3yr a

Royalties and Taxes Preliminary assessment Preliminary analysis

Smeltin Refinin and Frei ht Historic data Budgetary quotes

Cash Flow Analysis Simple cash flow Preliminary cash flow

Economic Criteria Simple IRR and NPV (pre- and after-tax) Preliminary IRR and NPV

Sensitivity Analysis Basic analysis to minimal amount of project variables Preliminary to selected ke

RISK EVALUATION

Risk Assessment General overview Fatal flaw analysis

Project Preliminary overview of geology, engineering, and environmental Preliminary environmentageology and engineering

Note 1: Internationally Recognized Standards include:

1. Canadian National Instrument 43-101 and 43-101 CP.

2. Australiasian Code for Reporting of Mineral Resources and Ore Reserves - prepared by the Joint Ore Reserve Committed (JORC)

3. U.S. Securities & Exchange Commission Industry Guide 7

4. SME Guide for Reporting Exploration Information, Mineral Resources and Mineral Reserves

Order-of-magnitude based historic data or factoringEstimates from historical

volumes

Minimum Report Contents for Engineering Studies (fuente Pinc

Documents

Tabla - Comparacion Estudios Ingenieria