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Variability on a SmallScale
Optimizing Sampling Protocol
Implementing Sampling Protocol
Preserving Sample Integrity
Analytical Error
Intro 1
INTRODUCTION
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Optimizing Sampling
Protocol
In Situ Nugget Effect
Fundamental Sampling Error
Grouping & Segregation Error
Intro 2
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Implementing
Sampling Protocol
Increment Delimitation Error
Increment Extraction Error
Intro 3
Increment Weighting Error
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Preserving Sample
Integrity
Increment Preparation
Errors
Contamination Error
Loss Error
Alteration Error
Human Error
Fraud & Sabotage
Intro 4
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Analytical Error
Scope Versus Principle
Additive Interferences
Proportional Interferences
Drying Temperature Baseline
Dissolution Technique
Composition of Dissolution Residues
Contamination and Losses
Intro 5
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Variability on a LargeScale
Interpolation Error
Time
Space
Periodic Error
Increment Weighting Error
Intro 6
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Setting Priorities
Effect of
Problem
Large
Small
Small Large
Cost of fixing problem
Yes
by all means!
Yes
but do afeasibility study
Yes
nothing to
loose
No
Intro 7
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Setting Priorities for
Sampling Gold,or base metals
Effect of
Problem
Large
Small
Small Large
Cost of fixing problem
SPC 6 sigma
TQM
FSE
IPE GSE
IDE IEE
AE
Sampling Interval
In Situ Nugget
Effect
Sampling Mode
IWE
Intro 8
Bias Test
Correcting Factor
Round Robin
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The Three-leggedTable
Company Benefits
Effective
Management CorrectSampling
Understanding
Variability
Intro 9
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Effective Management
Identify Structural Problems
Intro 10
Invest in Solutions to
Structural Problems
Identify Circumstantial Problems
Time & Money Can Be Saved on
Circumstantial Problems
Understand and Act on AllSources of Variability
Be Proactive Instead of Reactive
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Correct Sampling
In Situ Nugget Effect
Intro 11
Grouping & Segregation Error
Increment Delimitation Error
Increment
Extraction Error
Analytical Error
Fundamental Sampling Error
IncrementPreparation Errors
Interpolation Error
Periodic Error
IncrementWeighting Error
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UnderstandingVariability
Variability Generates Visibleand Invisible Costs
Variability is a Problemand an Opportunity
There are Many Kinds of Variability
Minimize Variability by a Constant
Improvement Strategy
All Sampling ErrorsMagnify Variability
Geostatistics Analyzes Variabilityat the Mine
Chronostatistics Analyzes Variabilityat the Plant
