UXO Classification with MetalMapperTMData

D.D. “Skip” Snyder - Snyder Geoscience, Inc.

Co-Authors:Mark Prouty, David George, Mary Poulton,Anna Szidarovszky, Tom King

Partners in Environmental Technology Conference & Workshop, December 2009

Outline•Background•Interpretation

▫Data Processing▫Classification (Decisions)

•SLO Results•Summary Remarks

MetalMapperMetalMapper

MetalMapper – Design features

•Compact, man-portable electronics

•3 Orthogonal Tx Loops

•7 tri-axial induction (dB/dt) receiver cubes

•Mapping/Static Acquisition Modes

SLO – Cued ID Deployment (SLO)

MetalMapper Receivers•10 cm Cubes•3 Component, Orthogoal Multiturn

Receiver Coils

Transmitter Waveform

MetalMapper Static Survey2494 pts Occupied

2178 Target Picks 5 NEW Target Picks 309 Repeats

Survey Time – 6.5 Days 56.6 hr

Production Rate 383 pts/day 42 pts/hr

Data Processing

Interpretation – Parameter Interpretation – Parameter ExtractionExtraction

Discrimination & Discrimination & ClassificationClassification

Interpretation - Classification

4 Polarizability Types - SLO

Test ROC Curves - SLOMetalMapper – SLO List 1 MetalMapper – SLO List 2

Future•Develop More Compact MetalMapper

System▫Lighter Weight, Less Transmitter Coils

•Additional TEM Systems?▫Deeper TEM System for Mineral

Exploration▫Metal Detection System for Deeper Targets