47
Geophysical Survey Report covering Borehole Pulse EM Surveys over the Agnew Lake Property for Pacific North West Capital Corp. during March - April, 2003 by CRONE GEOPHYSICS & EXPLORATION LTD. Survey Area: Survey Type: Survey Operators: Holes Surveyed: Survey Period: Report By: Report Date: Agnew Lake Property near Sudbury, Ontario Borehole Pulse EM Survey Wayne Pearson AL-22, AL-23 March 18th - April 1 s', 2002 K. Ralph, Geophysicist May, 2003 RECEIVED' MAR O 3 2004 SEOSCIENCF ASSESSMENT OFFICE 41I05SW2016 2.27290 DUNLOP 010

CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

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Page 1: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Geophysical Survey Report

covering

Borehole Pulse EM Surveysover the

Agnew Lake Propertyfor

Pacific North West Capital Corp.during

March - April, 2003

by

CRONE GEOPHYSICS & EXPLORATION LTD.

Survey Area:

Survey Type:

Survey Operators:

Holes Surveyed:

Survey Period:

Report By:

Report Date:

Agnew Lake Property near Sudbury, Ontario

Borehole Pulse EM Survey

Wayne Pearson

AL-22, AL-23

March 18th - April 1 s', 2002

K. Ralph, Geophysicist

May, 2003

RECEIVED'

MAR O 3 2004

SEOSCIENCF ASSESSMENT OFFICE

41I05SW2016 2.27290 DUNLOP 010

Page 2: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crane Geophysics A Exploration Ltd.

TABLE OF CONTENTS

PULSE ELECTROMAGNETIC SURVEY

i.o

2.0

3.0

4.0

5.0

6.0

7.0

INTRODUCTION

PROPERTY LOCATION

PERSONNEL

SURVEY METHODS

SURVEY PARAMETERS

PRODUCTION SUMMARY

DATA DISCUSSION

APPENDIX I :

APPENDIX V:

APPENDICES

PLAN AND SECTION MAPS

APPENDIX H : PULSE EM DATA PROFILES (LiN-Loo SCALE)

APPENDIX III: LINEAR (5-AXis) PULSE EM DATA PROFILES

APPENDIX IV: RAO TOOL SURVEY RESULTS

CRONE INSTRUMENT SPECIFICATIONS

Geophysical Survey Report

Page 3: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophysics de Exploration Ltd.

LIST OF TABLES

TABLE I:

TABLE II:

TABLE III:

TABLE IV:

BOREHOLE SURVEY COVERAGE

BOREHOLE LOOP COVERAGE

CHANNEL CONFIGURATION, 16 CHANNELS

PRODUCTION SUMMARY

FIGURE i:

FIGURE 2:

LIST OF FIGURES

Agnew Lake Property Location Map

Loop and Hole Location Map

Geophysical Survey Report

Page 4: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophysics tSc Exploration Ltd-

1.0 INTRODUCTION

Crone Geophysics and Exploration Ltd. was contracted by Pacific North West Capital Corp. to conduct a Borehole Pulse Time Domain Electromagnetic (PEM) survey on the Agnew Lake Property near Sudbury, Ontario. The survey was conducted during March - April of 2003 during which time 2 holes, namely holes AL-22 and AL-23, were surveyed from two separate transmit loops. This report outlines the geophysical work performed on this property. The appendices to this report contain page size plan and section maps, the PEM profiles in a lin-log format, the linear profile plots, and a brief description of the Crone Instrument Specifications.

2.0 PROPERTY LOCATION

The Agnew Lake Property is located ~ 70 km west - southwest of Sudbury, Ontario and the project area is located in Shakespeare, Dunlop, Shibananing, and Gough Townships.

3.0 PERSONNEL

The personnel involved in this project included:

Wayne Pearson Survey Operator Sudbury, Ontario Kevin Ralph Data Processing Burlington, Ontario

4. O SURVEY METHODS

Crone Pulse EM is a time domain electromagnetic method in which a precise pulse of current with a controlled linear shut off is transmitted through a large loop of wire on the ground and the rate of decay of the induced secondary field is measured across a series of time windows during the off-time. The EMF created by the shutting-off of the current induces eddy currents in nearby conductive material thus setting-up a secondary magnetic field. When the primary field is terminated, this magnetic field will decay with time. The amplitude of the secondary field and the decay rate are dependent on the quality and size of the conductor.

On this project, a 3D Borehole Pulse EM system was assembled in which an axial component (Z) probe and a cross component (XY) probe were used to measure the three components of the induced secondary field. The first pass with the 'Z' probe detects any in-hole or off-hole anomalies and gives information on size, conductivity, and distances to the edge of conductors. The second pass with the

Geophysical Survey Report

Page 5: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

5137000

5129000427000 428000 429000 430000 431000 432000 433000 434000 435000 436000 437000 438000 439000

Agnew

Figure 1: Agnow l ake Property Location Map

Pacific North West Capital Corp. Agnew Lake Property

Property Location Map

Page 6: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

5136000

5135500

5135000-

5134500-

5134000

5133500-

5133000-

5132500

N

5132000-^429000 429500 430000 430500 431000 431500 432000 432500 433000

Figure 2: Loop and Hole Location Map

Pacific North West Capital Corp. Agnew Lake Property

Loop Location Map

Page 7: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophysics A Exploration Ltd.

Table III: Channel Configuration, 16 ChannelsChannel

PP2468

10121416

Start-1.982e-046.299e-051.125e-042.027e-043.600e-046.389e-041.129e-031.993e-033.514e-03

Finish-9.900e-058.550e-051.531e-042.700e-044.815e-048.505e-041.498e-032.646e-034.666e-03

Channel13579111315

Start4.950&-058.550e-051.531e-042.700e-044.815&-048.505e-041.498e-032.646e-03

Finish6.299e-051.1256-042.027&-043.600e-046.389e-041.129e-031.993e-033.514e-03

6.0 PRODUCTION SUMMARY

Table IV: Production SummaryMarch 18th, 2003March 19th, 2003March 20th, 2003March 2 1 st, 2003March 22nd, 2003March 24th, 2003March 27th, 2003March 29*, 2003

March 30th, 2003March 31", 2003April 1st, 2003

Broke trail in to hole AL-22 and started to lay loopCarried some gear to hole, finishing laying loop and dummied hole.Surveyed Z component.Surveyed XY components and carried equipment from site.Picked up loop.Spent day trying to find access to hole AL-23 to permit carrying gear to hole.Carried all equipment in to site, dummied hole and laid V* of loop Al-23Finished laying loop and carried large borehole cable to the hole, very slow going due to poor conditions.Suveyed Z component and 720m with XY components.Finished surveying with the XY probe and started to cany gear from the site.Picked up loop and demobed all equipment from Agnew Lake Property.

7.0 DATA DISCUSSION

Holes AL-22 and AL-23 were both surveyed utilizing a time base of 8.33msec (30 Hz equivalent) with the loop(s) positioned to couple well with any flat-lying l shallow dipping structures. A 8.33 msec time base was chosen as the responses of any conductive features in this general area were expected to be weak as the expected targets were poorly conductive and/or disseminated/stringer sulphides. Lower base frequencies surveys in such environments are therefore not required as highly conducting sulphide targets (if present) would also be resolved with a higher base frequency (30 Hz) survey.

No discrete anomalous features have been identified in these holes as being due to discrete, large conductive sources and it is unlikely that any large conductive body lies within a 100-150m radius of these holes. Several spiky early time/ channel responses are evident in the X and Y components and the significance of these is not fully known at this stage but these may be caused by localized in/near hole effects. Appendix IV shows the results of the Rad-tool survey and the one item of interest to note is that there appears to

Geophysical Survey Report

Page 8: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophysics C& Exploration Ltd.

be several discrete magnetic sources in these holes, and these may be causing the early time responses evident in the XY data.

Resi

/v Kevin RalphGeophysicistCrone Geophysics Si Exploration Ltd.

Geophysical Survey Report

Page 9: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophysics de Exploration Ltd.

APPENDIX l

PLAN AND SECTION MAPS

Geophysical Survey Report

Page 10: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

431000E 431200E 431400E 431600E 431800E l l l l l

5133800N-

5133600N-

5133400N-

5133200N-

5133000N-

5132800N-

L-22

-N-

Scale 1:10000100 O 100 200

'j... b——~ (meters)

Pacific North West Capital Corp Agnew Lake Property

3-D Borehole Pulse EM Survey Borehole Se Loop Location Map

Hole: AL-22Survey Date: Mar 20. 2003

Crone Geophysics A Exploration Ltd.

Page 11: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

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0^ \ \ \ \ \ \ \ \ \

Padific North l^esf Capital Corp. Agnew Lake Property

3-D Borehole Pulse EM SurveyHole Section with Primary Field

Hole: AL-22Survey Date: Mar 20, 2003

Crone Geophysics A Exploration Ltd.

Page 12: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

430200E 430400E 430600E 430800E 431000E

5135200N-

5135000N-

5134800N-

5134600N-

5134400N-

-N-

Scale 1:10000100 O 100 200SS" ——

(meters)

Pacific North West Capital Corp, __Agnew Lake Property

3-D Borehole Pulse EM SurveyBorehole Se Loop Location Map

Hole: AL-23Survey Date: Mar 30, 2003

Crone Geophysics A Exploration Ltd.

Page 13: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

430400 E, 51 34600

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Pacific North West Capital Corp. Agnew Lake Property

3-D Borehole Pulse EM SurveyHole Section with Primary Field

Hole: AL-23Survey Date: Mar 30, 2003

Crone Geophysics A Exploration Ltd.

Page 14: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophvsics A Exploration Ltd.

APPENDIX II PULSE EM DATA PROFILES (LiN-Loo SCALE)

Geophysical Survey Report

Page 15: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Pri

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Page 16: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Pri

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Page 17: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

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Page 18: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

(SlOH CRONE GEOPHYSICS fit EXPLORATION LTD Borehole Pulse EM Survey

ClientGridDate

PFN Capital AGNEW LAKEMar 23, 2003

Hole Tx Loop File name

AL-22 LOOP1AL22XY.PEM

Data Corrected for Probe Rotation using Orientation Tool #103Positive X points South, Positive Y points East

X COMPONENT dBx/dt nanoTesla/sec - 16 of 16 channels and PPScale: 1:12000

-105

28m 60m

120m 160m

220rn260m300m340m380m420m460m500m540m580m620m660m700m740m780m820m860m900m940m980m1020m1060m1100m1140m1180m1220m1260m1300m1340m1380m1420m1460m1500m1540m1580m1620m1660m1700m1740m1780m1820m1860m1900m1940m1980m2020m2060m2100m

-104 -103 -10 2

Page 19: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

CRONE GEOPHYSICS fi EXPLORATION LTD Borehole Pulse EM Survey

ClientGridDate

PFN Capital AGNEW LAKEMar 23, 2003

Hole Tx Loop File name

AL-22 LOOP1AL22XY.PEM

Data Corrected for Probe Rotation using Orientation Tool #103Positive X points South, Positive Y points East

Y COMPONENT dBy/dt nanoTesla/sec - 16 of 16 channels and PPScale: 1:12000

-105

220m : 260m 300m

: 340m : 380m 420m 460m

: 500m : 540m 580m 620m 660m 700m 740m 780m 820m 860m 900m 940m 980m 1020m 1060m 1100m 1140m 1180m 1220m 1260m

: 1300m 1340m

: 1380m : 1420m : 1460m 1500m

: 1540m 1580m 1620m 1660m 1700m 1740m 1780m 1820m 1860m 1980m 1940m 1980m 2020m 2060m 2100m

-104 -103 103 + 10

Page 20: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

CRONE GEOPHYSICS 6 EXPLORATION LTD Borehole Pulse EM Survey

Client : PFN CapitalGrid : AGNEW LAKEDate : Mar 20, 2003

HoleTX LoopFile name

AL-22 LOOP1AL22Z.PEM

Z COMPONENT dBz/dt nanoTesla/sec - 16 of 16 channels and PPScale: 1:12000

-IB5

:20m i 60m i 100m i 140m i 180m i 220m \ 260m : 300m - 340m i 380m i 420m i 460m \ 500m : 540m : 580m .620m : 660m 700m 740m

; 780m ; 820m i 860m i 900m \ 940m : 980m

1020m 1060m 1100m

i 1140m 1180m

: 1220m 1260m 1300m

;1340m \ 1380m

1420m 1460m 1500m 1540m

;1580m i 1620m l 1660m ; 1700m

1740m 1780m 1820m 1860m 1900m 1940m 1980m 2020m 2060m 2100m

-104 -103 -102 104

Page 21: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Pri

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Page 22: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Pri

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Cha

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Page 23: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

400i

800 1200

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Pacific North West Capital Corp. Agnew Lake ProperyHole AL-23 Z Component

Crone Geophysics & Exploration Ltd.

Page 24: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

(SlOH CRONE GEOPHYSICS S EXPLORATION LTD Borehole Pulse EH Survey

ClientGridDates

PFN Capital AGNEW LAKEMar 31, 2003

Hole Tx Loop File name

AL-23 LOOP l23XYPP.PEM

Scale:

-105

Data Corrected for Probe Rotation using Cleaned PPX points North; Y points West

X COMPONENT dBx/dt nanoTesla/sec - 16 of 16 channels and PP1:10000

-1G)4

20m60m100m140m180m220m260m300m340m380m420m460m500m540m580m620m660m700m740m780m820m860m900m940m980m1020m1060m1100m1140m1180m1220m1260m1300m1340m1380m1420m1460m1500m1540m

+ 103

Page 25: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

CRONE GEOPHYSICS ft EXPLORATION LTD Borehole Pulse EM Survey

ClientGridDate

PEN Capital AGNEW LAKEMar 31, 2003

Hole Tx Loop File name

AL-23 LOOP l23XYPP.PEM

Scale:

-105

Data Corrected for Probe Rotation using Cleaned PPX points North; Y points West

Y COMPONENT dBy/dt nanoTesla/sec - 16 of 16 channels and PP1:10000

-104 -103

20m60m100m140m180m220m260m300m340m380m420m460rn500m540nn580m620m660m700m740m780m820m860m900m940m980m1020m1060m1100m1140m1180m1220m1260m1300m1340m1380m1420m1460m1500m1540m

-103

Page 26: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

CRONE GEOPHYSICS fi EXPLORATION LTD Borehole Pulse EM Survey

Client : PFN CapitalGrid : AGNEW LAKEDate : Mar 30, 2003

HoleTx LoopFile name

AL-23 LOOP123ZAV.PEM

Z COMPONENT dBz/dt nanoTesla/sec - 16 of 16 channels and PPScale: 1:10000

-105

20m50m80m110m140m170m200m230m260m290m

350m380m410m440m470m500m530m560m590m620m650m680m710m740m770m800m830m860m890m920m950m980m1010m1040m1070m1100m1 1 30m1160m1190m1220m1250m1280m1310m1340m1370m1400m1430m1460m1490m1520m1550m

-104 -103 -102

Page 27: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophysics ct Exploration Ltd.

APPENDIX III

LINEAR (s-Axis) PULSE EM DATA PROFILES

Geophysical Survey Report

Page 28: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Cha

nnel

s 13

-

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(nT

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Page 29: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Cha

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-

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Page 30: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

500 1000 1500

V n

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Pacific North West Capital Corp. Agnew Lake PropertyHole AL-22 Z Component

Crone Geophysics Se Exploration Ltd.

Page 31: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Cha

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-

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(nT

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Page 33: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

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Crone Geophysics k Exploration Ltd.

Page 34: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Crone Geophysics & Exploration Ltd.

APPENDIX IV

RAD TOOL SURVEY RESULTS

Geophysical Survey Report

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Pacific North West Capital Corp. Agnew Lake PropertyRad - tool Survey Results

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Page 36: CRONE GEOPHYSICS EXPLORATION LTD. - Ontario · Crone Geophysics C& Exploration Ltd. be several discrete magnetic sources in these holes, and these may be causing the early time responses

Pacific North West Capital Corp. Agnew Lake PropertyRad - tool Survey Results

Hole AL-23

Dip degrees

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Magtot degrees

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Crone Geophysics de Exploration Ltd.

APPENDIX V

CRONE INSTRUMENT SPECIFICATIONS

Geophysical Survey Report

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Crone Geophysics A Exploration Ltd.

CRONE PULSE EM SYSTEM

SYSTEM DESCRIPTION

The Crone Pulse EM system is a time domain electromagnetic method (TDEM) that utilizes an alternating pulsed primary current with a controlled shut-off and measures the rate of decay of the induced secondary field across a series of time windows during the off-time. The system uses a transmit loop of any size or shape. A portable power source feeds a transmitter which provides a precise current waveform through the loop. The receiver apparatus is moved along surface lines or down boreholes.

The transmitter cycle consists of slowly increasing the current over a few milliseconds, a constant current, abrupt linear termination of the current, and finally zero current for a selected length of time in milliseconds. The EMF created by the shutting-off of the current induces eddy currents in nearby conductive material thus setting-up a secondary magnetic field. When the primary field is terminated, this magnetic field will decay with time. The amplitude of the secondary field and the decay rate are dependent on the quality and size of the conductor. The receiver, which is synchronized to the off-time of the transmitter, measures this transient magnetic field where it cuts the surface coil or borehole probe. These readings are across fixed time windows or "channels".

SYSTEM TERMINOLOGY

Ramp Time"Ramp time" refers to the controlled shut-off of the transmitter current Three ramp times are

selectable by the operator, 0.5ms, 1.0ms, and 1.5ms. By controlling the shut-off rather than having it depend on the loop size and current ensures that the same waveform is maintained for different loops so data can be properly compared.

The 1.5ms ramp is the normally used setting for good conductors. It keeps the early channel responses on scale and decreases the chance of overload. The faster ramp times of 1.0ms and 0.5ms will enhance the early time responses. This can be useful for weak conductors when data from the higher end of the frequency spectrum is desired.

Time BaseTime base is the length of time the transmitter current is off (it includes the ramp time). This also

equals the on time of the current. Eight time bases are selectable by the operator. They include the original time bases used in the analog system as well as time bases to eliminate the effects of powerline interference. The eight time bases are as follows: compatible to analog Rx: 10.89ms, 21.79ms; 60hz powerline noise reduction: 8.33ms, 16.66ms, SL 33.33ms; 50hz powerline noise reduction: 10.00ms. 20.00ms, SL 40.00ms

Since readings are taken during the off cycles, the time base will have an effect on the receiver channels. Normally, a standard time base is selected for the type of system and survey being used, but this can be changed to suit a particular situation. A longer time base is preferred for conductors of greater time constants, and in surveys such as resistive soundings where more channels are desired.

Zero Timp SjptThe term "zero time set" or "ZTS" refers to the starting point for the receiver channel

measurements. It is manually set on the receiver by the operator thus allowing adjustments for the ramp times and fine tuning for any fluctuations in the transmitter signal.

Crone Pulse EM System Description l

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Crone Geophysics A Exploration Ltd.

Receiver ChannelsThe rate of decay of the secondary field is measured across fixed time windows which occupy

most of the off-time of the transmitter. These time windows are referred to as "channels". These channels are numbered in sequence with "l" being the earliest. The analog and datalogger receivers measured eight fixed channels. The digital receiver, being under software control, offers more flexibility in the channel positioning, channel width, and number of channels.

PP ChannelThe PEM system monitors the primary field by taking a measurement during the current ramp

and storing this information in a "PP channel". This means that data can be presented in either normalized or unnormalized formats, and additional information is available during interpretation. The PP channel data can provide useful diagnostic information and helps avoid critical errors in field polarity'.

SynchronizationSince the PEM system measures the secondary field in the absence of the primary field, the

receiver must be in "sync" with the transmitter to read during the off-time. There are three synchronization methods available: cable connection, radio telemetry, and crystal clock. This flexibility enhances the operational capabilities of the system.

SURVEY METHODS

The wide frequency spectrum of data produced by a Pulse EM survey can be used to provide structural geological information as well as the direct detection of conductive or conductive associated ore deposits. The various types of survey methods, from surface and borehole, have greatly improved the chances of success in deep exploration programs. There are eight basic profiling methods as well as a resistivity sounding mode.

Moving CoilA small, multi-turn transmitter loop (13.7m diameter) is moved for each reading while the

receiver remains a fixed distance away. This method is ideal for quick reconnaissance in areas of high background conductivity.

Moving LoopSame as Moving Coil method, but with a larger transmit loop (100 to 300 meters square). This

method provides deeper penetration in areas of high background conductivity, and works best for near-vertical conductors. This method can be used in conjunction with the Moving In-loop survey for increased sensitivity to horizontal conductors.

Moving In-LoopA transmit loop of size 100 to 300 meters square is moved for each reading while the receiver

remains at the center of the loop. This method provides deep penetration in areas of very high background conductivity, and works best for near-horizontal conductors. It can be used in conjunction with the Moving Loop survey.

Large In-LoopA very large, stationary transmit loop (800m square or more) is used, and survey lines are run

inside the loop. This mode provides very deep penetration (700m or more) and couples best with shallow dip conductors ^45 deg.) under the loop.

Crone Pulse EM System Description 2

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Crone Geophysics de Exploration Ltd.

DeepemA large, stationary transmit loop is used, and survey lines are run outside the loop. This mode

provides very deep penetration, and couples best with steeply dipping conductors (M 5 deg.) outside the loop.

Borehole (Z Component only)Isolated Borehole: A drill hole is surveyed by lowering a probe down a hole and surveying it with

a number of transmit loops laid out on surface. The data from multiple loops gives directional information on the conductors.

Multiple Boreholes: One large transmit loop is used to survey a number of closely spaced holes. The change in anomaly from hole to hole provides directional information. These methods have detected conductors to depths of 2500m from surface and up to 200m from the hole.

3-D BoreholeDrill holes are surveyed with both the Z and the XY borehole probes. The X and Y components

provide accurate direction information using just one transmit loop.Since the probe rotates as it moves down the hole a correction is required for the X-Y data. This

is accomplished in one of two ways. The standard approach is to use the measurement of the primary field from the "PP" channel, apply a "cleaning" algorithm to remove most of the secondary field contamination, and compare this to theoretical values. The amount of probe rotation is then calculated, and the correction can be made. The second method involves the use of an optional orientation device for the X-Y probe which is produced in co-operation with IFG Corp. This attachment uses dipmeters to calculate the probe rotation.

Underground BoreholeUnderground drill holes can be surveyed in any of the above mentioned borehole methods with

one or more transmit loops on the surface. Near-horizontal holes can be surveyed using a push-rod system.

Resistivity SoundingsBy reading a large number of channels in the centre of a transmit loop it is possible to perform a

decay curve analysis giving a best-fit layer earth model using programs such as ARRTI or TEMIX.

EQUIPMENT

Transmit LoopsThe PEM system can operate with practically any size of transmit loop, from a multi-turn

circular loop 13.7m in diameter, to a l or 2 turn loop of any shape up to l or 2 kilometers square using standard insulated copper wire of 10 or 12 gauge. The multi-turn loop is made in two sections with screw connectors. The 10 or 12 gauge loop wire comes on spools in either 300m or 400m lengths. The spools can be mounted on packframe winders for laying out or retrieving.

Power SupplyThe PEM system normally operates with an input voltage from 24v to 120v. Modifications have

recently been made to increase the power to 240 volts. The maximum current is still 20 amps. For low power surveys a 20amp7hr 24v battery can be used. The power supply requires a motor generator and a voltage regulator to control and filter the input voltage to the transmitter.

Specifications: PEM Motor Generator- 4.5 hp Wisconsin, (2 kw) -11 hp Honda (4 lew); 4 cycle engine- belt drive to D.C. alternator- cable output to regulator

Crone Pulse EM System Description 3

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Crone Geophysics (Se Exploration Ltd.

- maximum output: 120v, 20amp (2 kw); 240v, 20amp (4 kw)- fuse type overload protection- steel frame- external gas tank- unit weight: 33kg (2 kw); 52kg (4 kw)- optional packframe- wooden shipping box- shipping weight: 47kg (2 kw); SOkg (4 kw)

Specifications: PEM Variable Voltage Regulator- selectable voltage between 24v and 120v or 48v and 240v- 20amp maximum current- fuse and internal circuit breaker protection- cable connections to motor generator and transmitter- anodized aluminum case- unit weight 10kg; shipping weight 18kg- padded wooden shipping box

TransmitterThe transmitter controls the bi-polar on-off waveform and linear current shut-off ramp. The latest

2000w PEM Transmitter has the following specifications:

Specifications: PEM Transmitter- time bases: 10.89ms, 21.79ms, 8.88ms, 16.66ms, 33.33ms, 10ms, 20ms, 30ms- ramp times: 0.5ms, 1.0ms, 1.5ms- operating voltage: 24v to 120v (2 kw); 48v to 240v (4 kw)- output current: Samp to 20amp- monitors for input voltage, output current, shut-off ramp, tx loop continuity, instrument temperature,

and overload output current- automatic shut-off for open loop, high instrument temperature, and overload- fuse and circuit breaker overload protection- three sync modes: 1) built-in radio and antenna

2) cable sync output for direct wire link to receiver or remote radio3) connectors for the crystal clock

- anodized aluminum case- optional packframe- unit weight 12.5kg; shipping weight 22kg- padded wooden shipping box

ReceiverThe receivers measure the rate of decay of the secondary field across several time channels. Three

types of receivers are available with the PEM system: Analog Rx, Datalogger Rx, and Digital Rx. The Analog Rx and Datalogger Rx read eight fixed time channels while the Digital Rx, under software control, offers a variety of channel configurations. The Digital Rx has been used in the field for contract surveys since 1987.

Specifications: Digital PEM Receiver- operating temperature -400C to 500C- optional packframe- unit weight 15kg; shipping weight 25.5kg- padded wooden shipping box

Crone Pulse EM System Description 4

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Crone Geophysics dSr Exploration Ltd.

Menu driven operating software system offering the following functions:- controls channel positions, channel widths, and number of channels-time bases: 10.89ms, 21.79ms, 8.88ms, 16.66ms, 33.33ms, 10ms, 20ms. and 30ms- ramp time selection- sample stacking from 512 to 65536- scrolling routines for viewing data- graphic display of decay curve and profile with various plotting options- routines for memory management- control of data transmission- provides information on instrument and operating status

Sync EquipmentThere are three modes of synchronization available; radio, cable, and crystal clock. The radio

sync signal can be transmitted through a booster antenna from either the PEM Transmitter internal radio or through a Remote Radio.

Specifications: Sync Cable- 2 conductor, 24awg, Teflon coated- approx. 900m per aluminum spool with connectors

Specifications: Remote Radio- operating frequency 27.12mhz- 12v rechargeable gel cell battery supply- fuse protection- sync wire link to transmitter- coaxial link to booster antenna- anodized aluminum case- unit weight 2.7kg

Specifications: Booster Antenna- 8m, 4 section aluminum mast- guide rope support- '/J wave CB fiberglass antenna- range up to 2km- coaxial connection to transmitter or remote radio

Specification: Crystal Clocks- heat stabilized crystals- 24v rechargeable gel cell battery supply- anodized aluminum case- rx unit can be separate or housed in the receiver- outlet for external supplementary battery supply

Surface PEM Receive CoilThe Surface PEM Receive Coil picks up the EM field to be measured by the receiver. The coil is

mounted on a tripod that can be positioned to take readings of any component of the field.

Crone Pulse EM System Description 5

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Crone Geophysics d Exploration Ltd.

Specifications: Surface PEM Receive Coil- ferrite core antenna- VLF filter- l Okhz bandwidth- two 9v transistor battery supply- tripod adjustable to all planes- unit weight 4.5kg; shipping weight 13.5kg- padded wooden shipping box

Borehole PEM Z Component ProbeThe Z component probe measures the axial component of the EM field. The Z component data is

not affected by probe rotation so no correction are required.

Specifications: Borehole PEM Z Component Probe- ferrite core- dimensions: length - 1.6m; dia - 3.02cm (3.15cm for high pressure tested probes)- internal rechargeable ni-cad battery supply- replaceable heat shrink tubing for abrasion protection- pressure tested for depths 1300m, 2000m, and 2800m- packaged in padded cover and aluminum tube- shipped in padded wooden box; total weight 17kg

Borehole PEM XY Component ProbeThe XY probe measures two orthogonal components of the EM field perpendicular to the axis of

the hole. Correction for probe rotation can be achieved by two methods. The standard approach is to use the measurement of the primary field from the "PP" channel, apply a "cleaning" algorithm to remove most of the secondary field contamination, and compare this to theoretical values. The amount of probe rotation is then calculated, and the correction can be made. The second method involves the use of an optional orientation device for the X-Y probe that uses dipmeters to calculate the probe rotation.

Specifications: Borehole PEM XY Component Probe- ferrite core- dimensions: length - 2.01m; dia - 3.02cm- internal rechargeable ni-cad battery supply- selection of X or Y coils by means of a switch box on surface or automatic switching with Digital

receiver- replaceable heat shrink tubing for abrasion protection- pressure tested for depths to 2800m- packaged in padded cover and aluminum tube- shipped in padded wooden box; total shipping weight 20kg

Orientation DeviceThe orientation device is an optional attachment for the XY probe which measures the rotation of

the probe using two dipmeters.

Specifications: Orientation Device- 2 axis tilt sensors- sensitivity +I- 0. l deg.

Crone Pulse EM System Description 6

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Crone Geophvsics A Exploration Ltd.

- operating range -89.5 to -10 deg.- dimensions: length - 0.94m; dia - 28.5cm- packaged in padded cover and aluminum tube- shipped in padded wooden box; total shipping weight 11kg

Borehole EquipmentTo lower the probe down a drill hole requires a cable and spool, winch assembly frame and cable

counter. Borehole surveys also require equipment to "dummy probe" the hole before doing the survey.

Specifications: Borehole Cable- two conductor shielded cable- kevlar strengthened- lengths are available up to 2600m on three sizes of spools.- shipped in wooden box

Specifications: Slip Ring- attaches to side of borehole cable spool providing a connection to the receiver while allowing the spool to

turn.- VLF filter- pure silver contacts

Specifications: Borehole Frame- welded aluminum frame- removable axle- chain driven, 3 speed gear box- hand or optional power winding- hand brake and lock- two sizes: standard for up to 1300m cable: larger for longer cables- shipped in wooden box

Specifications: Borehole Counter- attaches to the drill hole casing- calibrated in meters- shipped in wooden box; total weight 13kg

Specifications: Dummy Probe and Cable- solid steel or steel pipe- same dimensions as borehole probe- shear pin connection to dummy cable- steel dummy cable on aluminum spool- cable mounts on borehole frame- various lengths to 2600m on 3 spool sizes.

Crone Pulse EA-/ System Description 7

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ONTARIO MINISTRY OF NORTHERN DEVELOPMENT AND MINES

Transaction No:

Recording Date:

Approval Date:

Client(s):

392741

Survey Type(s):

W0470.00358

2004-MAR-03

2004-MAR-04

Work Report Summary

Status: APPROVED

Work Done from: 2002-MAR-18

to: 2002-APR-01

PLATINUM GROUP METALS LTD.

DHGEO

Work Report Details:

Claim# Perform

S 1236162 SO

S 1236163 510,355

S 1236164 SO

S 1236165 SO

S 1236167 S10.355

S 1236173 SO

S 1236174 SO

S20.710

External Credits:

Reserve:

Perform Approve Applied

SO S800

510,355 S1,600

SO S3, 800

SO S3, 200

S1 0,355 S6,400

SO S1.600

SO S3,200

S20.710 S20.600

SO

S110 Reserve of Work

S110 Total Remaining

Applied Assign Approve ^sign Approve Reserve

S800

S1,600 S8,

S3.800

S3.200

S6.400 S3,

S1.600

S3.200

S20.600 S12,

SO 0 SO

700 8,700 S55

SO 0 SO

SO 0 SO

900 3,900 555

SO 0 SO

SO 0 SO

600 512,600 S110

Reserve Approve Due Date

SO 2005-MAR-05

555 2005-MAR-05

SO 2004-MAR-05

SO 2005-MAR-05

555 2005-MAR-05

SO 2005-MAR-05

SO 2005-MAR-05

S110

Report#: W0470.00358

Status of claim is based on information currently on record.

41I05SW2016 2.27290 DUNLOP 900

2004-Mar-09 11:59 armstrong^ Page 1 of 1

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Ministry ofNorthern Developmentand Mines

Date: 2004-MAR-04

Ministere du Developpement du Nord et des Mines Ontario

GEOSCIENCE ASSESSMENT OFFICE 933 RAMSEY LAKE ROAD, 6th FLOOR SUDBURY, ONTARIO P3E 6B5

PLATINUM GROUP METALS LTD. SUITE 800-409 GRANVILLE STREET VANCOUVER, BRITISH COLUMBIA V6C 1T2 CANADA

Tel: (888)415-9845 Fax:(877)670-1555

Dear Sir or Madam

Submission Number: 2.27290 Transaction Number(s): W0470.00358

Subject: Approval of Assessment Work

We have approved your Assessment Work Submission with the above noted Transaction Number(s). The attached Work Report Summary indicates the results of the approval.

At the discretion of the Ministry, the assessment work performed on the mining lands noted in this work report may be subject to inspection and/or investigation at any time.

If you have any question regarding this correspondence, please contact BRUCE GATES by email at [email protected] or by phone at (705) 670-5856.

Yours Sincerely,

Ron C. GashinskiSenior Manager, Mining Lands Section

Cc: Resident Geologist

Laurence Scott Jobin-Bevans (Agent)

Assessment File Library

Platinum Group Metals Ltd. (Claim Holder)

Platinum Group Metals Ltd. (Assessment Office)

Visit our website at http://www.gov.on.ca/MNDM/LANDS/mlsmnpge.htm Page: 1 Correspondence 10:19201

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Mining Land Tenure Map

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