HELICOPTER-BORNE MAGNETIC AND VLF GEOPHYSICAL …

I I I I I I I I I I I I I I I I I I DECEMBER 2007

I

HELICOPTER-BORNE MAGNETIC AND VLF GEOPHYSICAL SURVEY

NTS MAP SHEET 42A102

DATA ACQUISITION REPORT LAKE ASHLEY PROJECT

Presented to:

CANADIAN ROYALTIES INC. 2772, chemin Sullivan

Sullivan (Quebec) JOY 2NO

Presented by:

GEOPHYSICS GPR INTERNATIONAL INC. 100-2545 Delorimier Street

Longueuil (Quebec) J4K 3P7

M-07428

I I I I I I I I I I I I I I I I I I I

TABLE OF CONTENTS

1. INTRODUCTION ............................................................................................................ 1

2. SURVEY S ...................................................................................................................... 2

2.1 Survey area .......................................................................................................... 2

2.2 Survey block parameters ...................................................................................... 3

2.3 Survey geodetic parameters ................................................................................. 4

3. LOGISTICS ..................................................................................................................... 5

3.1 Survey helicopter .................................................................................................. 5

3.2 Survey personnel .................................................................................................. 5

3.3 Preparation ........................................................................................................... 5

3.4 Operating base & fuel cache ................................................................................. 5

3.5 Flight dates ........................................................................................................... 5

4. DATA ACQUISITION ...................................................................................................... 6

4.1 Planned survey parameters .................................................................................. 6

4.2 Quality control ....................................................................................................... 6

5. SURVEY EQUIPMENT ................................................................................................... 7

5.1 The HELIMAGERTM Gradiometer system ............................................................. 7

5.2 Helicopter-borne magnetometers .......................................................................... 8

5.3 Base-station magnetometer .................................................................................. 8

5.4 DGPS positioning .................................................................................................. 8

5.5 Radar altimeter ..................................................................................................... 8

5.6 Helicopter data acquisition and recording system ................................................. 8

5.7 Field computer workstation ................................................................................... 9

6. DATA PROCESSiNG .................................................................................................... 10

6.1 Magnetic data ..................................................................................................... 10

6.2 Digital Terrain Model (DTM) ................................................................................ 12

6.3 Presentation ........................................................................................................ 12


TABLE OF CONTENTS (continued)

7. FINAL PRODUCTS ....................................................................................................... 13

7.1 Paper products ................................................................................................... 13

7.2 Digital products ................................................................................................... 14

8. CONCLUSION .............................................................................................................. 15

REFERENCES

CERTIFICATE OF QUALIFICATION

FIGURE 1

FIGURE 2

FIGURE 3

FIGURE 4

LIST OF FIGURES

General survey area ......................................................................................... 2

Survey area and map sheet location for Lake Ashley Project ........................... 4

HelimagerTM in flight with a Bell 206-L .............................................................. 7

Standard magnetic data processing flow ........................................................ 11

LIST OF TABLES

TABLE 1 Survey block coordinates ................................................................................... 3

TABLE 2 Geodetic parameters ........................................................................................... 4

TABLE 3 Survey personnel ................................................................................................ 5

TABLE 4 Planned survey parameters ................................................................................. 6

TABLE 5 Drawing titles and numbers ............................................................................... 13

LIST OF APPENDICES

APPENDIX A Equipment calibration and tests

APPENDIX B Miniature map samples

APPENDIX C Maps

Drawing number: 07-12-700-00 to 07-12-705-00

APPENDIX D Digital data on CD-ROM


1

1. INTRODUCTION

During November 2007, Geophysics GPR International Inc. flew a helicopterborne magnetic and EM-VLF geophysical survey for Canadian Royalties Inc. The survey was composed of one single block with a minimum coverage of 150 linekm, located near Matachewan, (Ontario) on the NTS sheet 42A102. A total of 141 line-km was flown from November 23rd to 24th 2007. The linear coverage difference is due too the fact that some tie-lines were not flown.

The Helimager™ system is a towed bird system configured with two caesium vapour magnetometers at the end of the lateral arm and one on top of the horizontal boom. The system also includes two DGPS systems, one mounted into the helicopter and onto the bird. Finally, a EM-VLF system was attached to the bird.

This report is intended to be read in association with the printed maps provided in Appendix C.

Data processing and quality control was carried out by Josianne Morel, Eng Jr and Olivier Letourneau, Phys. The report was written by Isabelle D'Amours, Eng. M.A.Sc. and Olivier Letourneau, Phys.


2

2. SURVEY S

2.1 Survey Area

The survey area is located near Kirkland Lake, Ontario, Canada Figure 1. The survey consists of one single block on the NTS map sheet 42A102.

-81' -80' SO' -80' 4() , -80'30' -80'20' -80'10' -80'

-81' -80'SO' -80'40' -80' 30' -80'20'

CANADIAN ROYALTIES INC,

GENERAL LOCATION MAP

-80' 10' -80'

-f-5000 0 5000 10000 15000 IIjjOIi

(me~)

NAD83 / UTM zone 17N

Figure 1 - General survey area


3

2.2 Survey block parameters

The direction of the flight lines is (0°-180°). The direction of the tie-lines is (90°-270°), with respect to UTM coordinates.

The coordinates given in Tables 1 represent the outline of the zones to be flown. All coordinates are given in UTM zone 17N (NAD83).

x (rn) V(rn) 515521 5321866 513971 5321857 513964 5320379 513021 5320379 513021 5318332 514838 5318368 514829 5319467 515523 5319467 515521 I 5321866

Table 1: Survey block coordinates

One block was scheduled for surveying for a total of 150 linear kilometers, based on 50 meters line spacing and 500 meters tie-line spacing.


4

2.3 Survey geodetic parameters

48°

The DPGS data were acquired as longitude and latitude format in WGS84 coordinates system. The coordinates were re-projected as NAD83 Zone 18 North using Geosoft's Oasis Montaj software. Table 2 below presents the geodetic parameters that were used for data processing.

Datum: NAD83

Ellipsoid: GRS-80

Projection: UTM

Zone: 17N

Central meridian: _810

False Easling: 500000

False Northing: 0

Scale factor: 0.9996

Table 2 - Geodetic parameters

LOCATION PLAN

t 81°

[ I

1 1

NTS 42A02

NTS 41P15

Figure 2 - Survey area and map sheets location for Lake Ashley Project

1 I I I I I I I I I I I I I I I I I I

5

3. LOGISTICS

3.1 Survey helicopter

• Type Bell 206-L Jet Ranger • Call sign: C-GMHY • Operated by: Canadian Helicopters ltd, based in Radisson, Quebec

3.2 Survey personnel

The survey crew consisted of the following personnel (Table 3):

Operator Guillaume Perron, tech. Nicolas McCrae, tech.

Data QC and Processing Josianne Morel, Eng. Jr. Olivier Letourneau, Phys.

Map QC and Report Olivier Letourneau, Phys. Isabelle D'Amours, Eng., MA.Sc.

Drafting Andre Beaudoin, tech.

Project Manager Rejean Paul, Eng.

Mechanic Sylvain Ouellette

Pilot Philippe Tajan

Table 3 - Survey personnel

3.3 Preparation

The helicopter's installation was carried out at the base of Canadian Helicopters ltd located in Radisson, Quebec. The HelimagerTM system was assembleo and a test flight was carried out

3.4 Operating base & fuel cache

The crew was based in the city of Kirkland Lake, Ontario. Kirkland Lake's airport was used for take-off and landing operations with the bird attached.

3.5 Flight dates

The crew was already mobilized on November 23rd. Flying production was

carried out from November 23rd to 24th. The crew demobilized on November 24th. No day was lost due to bad weather condition.


6

4. DATA ACQUISITION

4.1 Planned survey parameters

Table 4 below shows the planned survey parameters for the project.

Parameters Specifications

Ma~. SamplinQ Interval 2.5 m (0.1s)

VLF. SamplinQ Interval 2.5 m (0.1s)

Flight-line Spacing 50m

FIiQht-line Direction 0°_180°

Control-line Spacing 500 m

Control-line Direction 90°-270° . Aircraft MTC 60m +/- 6m

Ma~. Sensor MTC 30m +/- 6m

Ground speed 80 km/h +/- 20 km/h * Mean Terrain Clearance

Table 4 - Planned survey parameters

4.2 Quality control

During data acquisition, quality control was carried out on data on a daily basis by GPR's data processor to ensure that quality remained within specifications. At the end of the planned survey, data were reviewed by GPR's team leader and re-flight lines were identified. Profiles were checked after each production day to ensure correct flight path recovery and instrument noise was verified using Geosoft Oasis Montaj Software.


7

5. SURVEY EQUIPMENT

5.1 The HELIMAGERTM Gradiometer system

The HELIMAGERTM system consists of a tri-axial magnetic gradiometer, developed by Geophysics GPR International Inc. The gradiometer was installed on a stable helicopter-borne vector platform capable of accepting a range of different sensors I instruments, particularly useful for the mapping and exploration of mountainous regions. The platform allows the arrangement of the sensors in three orthogonal directions. A photograph of the platform is presented below (Figure 3).

Advantages of measuring the lateral gradients include the production of bidirectional total magnetic field gridding using measured transversal magnetic gradient. It may also be used for the gridding of the Laplace Enhanced Vertical Gradient, as we" as allowing Laplace Enhanced Total Field gridding that are both free of a" diurnal variations, if data quality permits it, which is the case for this project.

Figure 3 - HelimagerTM in flight with a Bell 206-L


8

5.2 Helicopter-borne magnetometers

Three {3} Geometries G-823A (optically pumped caesium vapour) total magnetic field sensors with a sampling interval of 0.1 second were mounted on the gradiometer, below a 30 meters cable under the helicopter. Two (2) of the sensors were installed at the end of the horizontal boom (6m spacing) and one above the vertical boom (1.5m spacing). The magnetometers send directly the measured magnetic field intensity as nanoTesla (nT) units to the data acquisition system via a RS-232 port.

5.3 Base-station magnetometer

A Geometries G-856 Ax (proton precession) total magnetic field sensor, with a sampling interval of 4 seconds was used to record the diurnal variation of the magnetic field at the base-station's location. The base-station was set up at a location away from power lines and main roads to avoid interference from traffic. It was located a few kilometers from the helipad in a nearby forest.

5.4 DGPS positioning

A Crescent R120 DGPS receiver that offers many differential correction options for various environments and worldwide coverage was used for inflight navigation, with a sampling interval of 0.1 second. The antenna was mounted directly on the bird, and allowed an accurate positioning of the bird.

The DGPS system provides an accurate positioning as well as the height above the WGS-84 ellipsoid. A LED-type track bar (from AG-NAV Inc.) was used by the pilot for efficient line tracking in any lighting conditions. A second DGPS comprising the same elements was mounted on the helicopter.

5.5 Radar altimeter

A FreeFUght TRA3000 radar altimeter, combined with a TRI40 Indicator unit mounted on the helicopter provides the pilot with highly accurate altitudeabove-ground-Ievel (AGL) information.

5.6 Helicopter Data Acquisition and Recording System

The Helicopter data acquisition and recording system is composed of proprietary hardware developed by Geophysics GPR International Inc. and an industry standard navigation I recording software package (Hypack Max 6.2). Data were recorded on hard disk and backed up after each flight

(~ ... ~.A'\-. \V';/ "-._/


9

5.7 Field computer workstation

A dedicated laptop computer was used on-site for the purpose of displaying geophysical data for quality control, calculating and displaying the navigation, producing preliminary magnetic and VLF total field maps, and backing up digital data.


10

6. DATA PROCESSING

6.1 Magnetic data

1) Data checking, editing, reformatting and flight path recovery

Data recorded on the helicopter were transferred after each flight to the processing computer for verification and quality control. Raw GPS data (longitude, latitude and height) were recorded in the WGS-84 geodetic system. These coordinates were transformed into the NAD83 datum, UTM projection, Zone 17 North by the navigation software and compared in real-time to the theoretical coordinates of the flight paths to provide a correction to the pilot.

The DGPS data were recorded at 10Hz (0.1 s interval), the same rate as magnetic data and exported for flight path recovery and quality control.

Raw line data was transformed into Oasis Montaj .XYZ format by a proprietary software program. Data coordinates were re-projected in NAD83 datum, UTM projection Zone 17 North using Oasis Montaj.

2) Diurnal corrections

The magnetic data recorded at the base-station were synchronized, using the GPS time and merged with the helicopter-borne data. Subsequently, the diurnal corrections obtained by subtracting the mean value of the base-station readings were applied to the data after low-pass filtering.

3) Lag corrections

A lag correction of 0.85 second was applied to the final processed magnetic data based on a lag test executed on survey location. The results of this test can be found in Appendix A. The LevCorr processing module in Oasis Montaj was used to carry out this operation.

4) Heading corrections

A heading correction was not applied to the magnetic data since the original data was of sufficient quality. The results of the heading calibration can be found in Appendix A.


11

5) Tie-line levelling

Classical tie-line levelling was partially performed on the horizontal gradients data due to the missing Tie-lines. The LevTieLine processing module in Oasis Montaj was used to carry out these operations.

6) Enhanced total magnetic field

The total magnetic field was enhanced using the measured horizontal gradients based on Laplace's law for potential field and a Hilbert transform property.

7) Enhanced vertical gradient

The vertical gradient was enhanced using the measured horizontal gradients based on Laplace's law for potential field and an Hilbert transform property.

Figure 4 presents a summary of the processing sequence used to obtain the final magnetic grid.

I Raw mag I 1-----------,

I HemUng ","eet,,, .\ I if required I , 1 no

De-spiking and lag 1 ____ - _____ 1

+ application r

Tie line levelling " USing multiple statistical passes

Base-station

J (trends, splines) Gridding

correction Corrections applied and '- yes to both ties and ~ calculation ~tiS~ct~ lines to reduce of vertical ... intersection gradient

differences to 0 -'- ~

,-----'------, ~ , I I Micro-levelling I I IGRF correction if I I required I , 1

I I -----______ 1

Figure 4 - Standard magnetic data processing flow

Final gridding


12

6.2 Digital Terrain Model (DTM) data processing

The Digital Terrain Model was obtained by subtracting the radar altimeter readings from the DGPS height. The radar altimeter was corrected for an estimated lag of 2 second.

A standard combination of a Butterworth high-pass filter followed by a directional cosine filter was used to obtain the residual error grid, which was imported in the Oasis Montaj database, filtered and subtracted from the original to obtain the de-corrugated DTM data.

6.3 Presentation

The Enhanced Total Magnetic (ETF) Field, Enhanced Vertical Gradient (EVG), Digital Terrain Model (DTM), Very Low Frequency (VLF) Total Field and VLF Quadrature were gridded using the Minimum Curvature algorithm of Oasis Montaj using a cell size of 10.


13

7. FINAL PRODUCTS

7.1 Paper products

A standard set of geophysical maps was produced at a scale of 1: 20 000. The flight path is presented on a separate map. The claims boundaries and numbers are displayed on this map. The name and direction of the lines are indicated at the beginning and end of each line.

The maps were drawn in the UTM projection Zone 17 North, NAD83 datum. Coordinate units are in meters, unless indicated otherwise.

The final paper products consist of six (6) maps at a scale 1 :20 000 as follows:

1) Flight path recovery and property limits map 2) Colour contour map of the Enhanced Total Magnetic Intensity 3) Colour contour map of the Enhanced Vertical Gradient 4) Colour contour map of the Digital Terrain Model 5) Colour contour map of the VLF Total Field 6) Colour contour map of the VLF Quadrature

The digital data are included on a CD-ROM along with the printed maps.

Table 5 below lists each map type and its associated drawing number.

Drawing title Drawing number

FliQht path Recovery and Prope~limits 07-12-700-00

Enhanced Total Field, (nTJ 07-12-701-00

Enhanced Vertical Gradient (nT/m) 07-12-702-00

VLF Total Field (Pllm) 07-12-703-00

VLF Quadrature (01m) 07-12-704-00

Digital Terrain Model, (m) 07-12-705-00

Table 5 - Drawing titles and numbers


14

7.2 Digital products

Below is a list of the products delivered on CD-ROM (More in Appendix C).

There are two (2) main directories:

Data

Contains for Mag. and VLF.:

Report

• Databases

• Grids • Projection information files

• Maps • Files used in the Maplnfo

software to distinguish a Geosoft map file from a Maplnfo file

• Geo referenced image map

Contains:

• Copy of the report • Report on the lag test for mag.

(Oasis MontajTM .GDB and ASCII.XYZ) (MontajTM .GRD binary grid format) (Maplnfo and other .GI) (Oasis MontajTM .MAP)

(Maplnfo and other .GM)

(Monta{M .TIFF)

• Report on the heading test for mag

(Adobe Acrobat .PDF) (Adobe Acrobat. PDF) (Adobe Acrobat .PDF) (Adobe Acrobat .PDF) (Adobe Acrobat .PDF)

• Daily flight log • Description of the database's

Channel


15

8. CONCLUSION

A helicopter-borne magnetic and EM-VLF survey was flown for Canadian Royalties Inc. The survey was composed of one single (1) block near the city of Kirkland Lake, Ontario. A total linear distance of 141 km was flown from November 23rd to 24th

, 2007.

The total magnetic intensity. 3-Dimensional Magnetic Gradients. VLF total field and quadrature horizontal components were measured by the helicopter-borne system. DGPS positioning data were collected.

The final paper products consist of maps at a scale of 1 :20 000. A total of six (6) maps was produced. The digital products consist of final databases, maps, metadata files and final grid files. Digital data are included on the CD-ROM and the content is described in Appendix C.

It is hoped that the information presented in this report and on the accompanying maps will be useful both in planning subsequent exploration efforts and interpretation of related exploration data.

This report was written by Isabelle o 'Amours. Eng., M.A.Sc. and Olivier Letourneau, Phys., and was approved by Rejean Paul, Eng., Geoph.


REFERENCES

Mouge P. and Chalifoux E., 2005, Stable heli-borne vector platform for performing geophysical measurements. Patent No.: US 6,845,936 B1.

Nabighian, M.N., 1984, Toward a three-dimensional automatic interpretation of potential-field data via generalized Hilbert transforms: fundamental relations, Geophysics. Vol. 49.780-786.

McNeill, J.D. Labson, V.F.,1992, Geological Mapping Using VLF radio Fields in Electromagnetic Methods in Applied Geophysics, ed. Misac Nabighian, vol. 2., Society of Exploration Geophysicists, Tulsa.


CERTIFICATE OF QUALIFICATION

1. I, the undersigned, Isabelle D'Amours, residing at 6875 rue Corelli, Brossard, Quebec graduated with a B. Eng. in geological Engineering from Ecole Polytechnique de Montreal in 1996 and I obtained a M.A.Sc. in Applied geophysics in 1998 also from Ecole Polytechnique de Montreal and I have worked in airborne geophysics since the year 2000.

2. I am a member of the Ordre des ingenieurs du Quebec (number 118513) and of the Society of Exploration Geophysicists.

3. I have no direct or indirect interests in the mining claims owned by Canadian Royalties Inc., nor in the securities of this company and have no interest in receiving such interest.

4. My company, 1.0. Geophysics Inc., is hired by GPR Geophysics Inc. for consulting and training purposes.

Signed in Longueuil, on the Ie tl\ (rtf r: t <,; /Jdt L / Jcc '-1

Respectfully submitted,

Isabelle D'Amours, Eng. M.A.Sc. (# 1185

I I I I I I I I I I APPENDIX A

Equipment Calibration and Tests

I I I I I I I I I


AEROMAGNETIC SYSTEM CALIBRATION (HEADING TEST)

Project #: M07428 ,

Aircraft: Company: Magnetometer: Data Acquisition system:

EXEMPLE

0

90 180

170

C-GMHY Date: Canadian Royalties Height Flown: Geometries G-823A Sampling rate: Helimager 2 Compiled by:

IIlVU. IlVII

hh:mm:ss (nT)

20:25:00 57507.16003

20:20:00 57507 .82533

20:05:00 57509.14527

20:00:00 57509.94313

.TBL to be use for heading correction in geosoft.

1 Geosoft Heading Correction Table 1= Direction:real:i 1= Correction: real 1 Direction Correction

o 90

180 270

0.99 1.06

-0.99 -1.06

28/06/2007 60m 10 Hz Olivier Letourneau, Phys.

l.-orreCLlon

(nT)

0.99

1.06

-0.99

-1.06


AIRBORNE GEOPHYSICAL SURVEY

MAG LAG TEST

PROJECT: LOCATION: CLIENT: DATE:

LINE (#)

L201 L101

M07428 Kirkland Lake, ON Canadian Royalties Inc. November 24th, 2007

" 1

HEADING (0) o

180

FIDUCIAL (#)

69

D

X (m)

567874.8 567882.0

MEAN SPEED = (V1 + V2) I 2 DISTANCE ={(X2-X1)2+ {Y2-Y1)2}1/2 LAG = (DISTANCE I 2) I MEAN SPEED

30.1 mls 51.2 m

PILOT: Philippe Tajan OPERATOR: Nicholas McCrae COMPILED: Olivier Letourneau, Phys. AIRCRAFT: Bell 206L - C-GMHY

Y (m)

5331176.9 5331126.2

" 2

(X"Y,)

SPEED (m/s) 29.16 31.03

Magnetic Field (nT)

56801.96 56731.29

MEAN SPEED DISTANCE LAG 0.8507 assumed to be 0.85 s

- - -Rapport journalier - - - - - -10-12R:36 - - - - - - - -RAPPORT JOURNALIER

Contrat: M07428 # Bloc Modele: Bell206L Leve: Mag, VLF Equipe GPR

Client: Canadian rOll:alties Immatriculation: I C-GMHY Position station de base Responsable: Guillaume Perron

Endroit: Kirkland Lake Pilote: pnll~~e alan

Long.: Operateur: Nicolas McCRae

Helipad: Aero~ort de Kirkland lake Mecano: Sllivain Ouelette Lat.: Helico Leve Meteo Carburant Iheures) Ikm) IJournee) IBaril)

Jour# Date Equipiers Activites et commentaires * Prevus: Ope.

1 23-Nov-2007 GP.NM 1 Vol.

--------76,7

2 24-Nov-2007 GP,NM 1 Vol. 64,3

TOTALjours 1 a 8 0,0 141,0 0,0 0,0

MR = Marc Rousseau

so = Stephane Desharnais

12 jours de leve, attente et preparation incluse

Jours d' Attente • station VLF ~.:.;!..,~ _,_~~ -,I • __ ._

~ ____ • ____ .. _____ ... -~ ......... "'..l~~ ___ -.~

- r - ~ ... .. ...... , .. - ..... - - - . . , ... _. ________ .... __ • ______ --.; ___ .. ,<t- __ .\ -

1 Jours de preparation

6 Total des Jours d'Attente

6 jours de leve, sans attente

X:ICONTRATS\2007\M07428_CanadianRoyallies_MagVLFHeli_MalachewanIRapportIM07428_Rapportjournalier,xls


APPENDIX B

Miniature map samples

I I N

I ! I I I I I I

~ 4202025

I ~

I

4202026 ,

~ \ ,

I 4202027

I I I I

CLAIM MAP ASHLEY LAKE

I Ontario

I Propriete Ashley Lake -.:===..

I Claims

'"---'

I

o o o ..-N M ~

o . 0 ;" 0 coo "" N

M ~

o o o (J) ..-M ~

-80"49'

513000

+

514000

Ul W N N o 0 .... 0'" w

Ul W N

o o o

Ul W ~

• • • • • • • • • (D

o o o

Co 0 ~t - + . U1 ~ ~O W~ o ~

ro ~ ~ . . . . . . . . . . . . . . . ....... a M 0 ~ L-____ ~~ __________ ~ ______ ~~ ________________ ~~ ________________ ~o

513000 514000 515000

250 0 ---

·80'49'

Scale 1 :20000 250 500 750

mel res NAre:J / (ffMzonGI7N

-80048'

1000 1250

352 351 350 349 348 347

346 345 344 343 342 341 340 339 338 337 336 335 334

333 332

331 330 329 328 327 326 325

324 323 322 321 320 320

Digital Terrain Model (m)

LEGEND

INTERVAL CONTOUR 1 m INTERVAL CONTOUR 5 m INTERVAL CONTOUR 25 m LAKE OR RIVER

SURVEY SPECIFICATIONS -Line spacing: 50 m -Mean terrain clearance : 30 m -Line direction: N-S -Tieline direction : E-W -Survey date: November 23rd to 24th , 2007 -Line kilometres: 141 km

GEODETIC SPECIFICATIONS -Map projection: UTM -Datum: NAD-83 -UTM zone: 17 north -Central meridian: 81 0 west

AIRCRAFT -Be1l206L, callsign: C-GMHY -Aircraft elevation (MTC): 60 m (nominal) -Average aircraft speed: 22.3 mls -GPS receiver: Crescent R120 DGPS -GPS sample rate: 0.1 s

RADAR SPECIFICATIONS -Model: TRA-3000 I TRI-40 -Radar installation : Bird -Radar accuracy: 1.5 m

PROCESSING SPECIFICATIONS -Digital Terrain Model obtained by subtracting the radar altimeter from the GPS height.

-Microlevelling

LOCATION PLAN

t NTS 42A02

48·'+-------------,-~~_:_::__:_::_-------------

NTS 41P15

CANADIAN ROYALTIES INC. ASHLEY LAKE PROJECT

HELICOPTER MAGNETIC AND VLF SURVEY

DIGITAL TERRAIN MODEL m Contract: M-07428 Scale: 1: 20000 Drawing by A. Beaudoin, tech. Checked by I. O'Amours, Eng.

Date: December 2007

Orawing no.: 07-12-705-00 Processed by O. Letourneau, Phys.

Approved by R. Paul , Eng .

~ GEOPHYSICS GPR INTERNATIONAL INC.

o o o N N

• ("'l

r;;~ '<t

o o o ..-N ("'l ~

o . 0 ~ o coo 'Q"N

("'l ~

o o o OJ

M ~

-80 '49' 513000

+

514000 -80 '48'

515000

U"I (.oJ N N o 0'" 0 00

w

(Jl (.oJ N ~

o o o

(Jl (.oJ ... NO;) o~ o -o o

(Jl (.oJ -"

. • • • • • . • • ill o o o

100 +. (Jl~ ~o w~ o ~

ro ro M . . . . . . . . . . . . ....... g ~ L-____ ~ ____________ ~ ______ ~ __________________ ~ __________________ ~O

513000 514000 515000 -80'49' -80'48'

Scale 1 :20000 250 0 250 500 750 1000 1250

~-~-~~~--~~~~~~ metres NACJ33 / UTM zone ' IN

Inclinaison: 73.8° Declinaison: -11.0°

64.850

23.300

1.025

0.175

0.050

0.000 -0.025

-0 .050

-0.075

-0 100 -0.125

-0.150

-0.175

-0.200

-0.225

-0.250

-0.275

-0.300

-0.325

-0.350

-0.375

-0.425

-0.475

-0.525

-0.575

-0.650

·0.750

-0 .875

-1.100

-1.400 -1.850

-2.450

-3.500

-5.925

-10.325

-32.292

Enhanced Vertical Gradient (nT/m)

LEGEND

INTERVAL CONTOUR 0.025 nT/m INTERVAL CONTOUR 0.1 nT/m INTERVAL CONTOUR 0.5 nT/m INTERVAL CONTOUR 5 nT/m LAKE OR RIVER

SURVEY SPECIFICATIONS -Line spacing: 50 m -Mean terrain clearance: 30 m -Line direction: N-S -Tieline direction: E-W -Survey date: November 23rd to 24th, 2007 -Line kilometres: 141 km

GEODETIC SPECIFICATIONS -Map projection: UTM -Datum: NAD-83 -UTM zone: 17 north -Central meridian: 81° west

AIRCRAFT -Bell 206L, callsign : C-GMHY -Aircraft elevation (MTC): 60 m (nominal) -Average aircraft speed : 22.3 m/s -GPS receiver: Crescent R120 DGPS -GPS sample rate: 0.1 s

MAGNETOMETER SPECIFICATIONS -Model: Geometrics G-823A caesium vapour -Mounting : Towed bird, 3 sensor

-Cable length: 30 m -Sample rate: 10 Hz -Sensitivity: 0.002 nT (sqrt (Hz))

PROCESSING SPECIFICATIONS -Vertical gradient enhancement using horizontal gradients

LOCATION PLAN

NTS 42A02 48'·'--l--------------~------------------

NTS 41P15



ENHANCED VERTICAL GRADIENT nTlm Contract: M-07428 Scale: 1: 20000 Drawing by A. Beaudoin, tech. Checked by I. D'Amours, Eng .

Date: December 2007 Drawing no. : 07-12-702-00

Processed by O. Letourneau, Phys . Approved by R. Paul , Eng.


o o o N N

- M ~ LO ""

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.80°49'

513000 514000

+

.80 °48'

515000

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ro ~ <r- • • • • • • • • • • • • • • • • • • • • • • 0 M 0 ~ L-____ ~ ____________ ~ ______ +-________________ ~~ __________________ ~O

513000 514000 515000

250 0 !IijiijIiI-

-80'49' -80'48'

Scale 1: 20000 250 500 750

metres NA£mI I.ffM zane 1m

1000 1250

Inclinaison: 73.8° Declinaison: -11 .0°

56660 56650 56630 56620 56600 56590 56570 56560 56550 56540 56530 56520

54232

Enhanced Total Field (nT)

LEGEND

INTERVAL CONTOUR 10 nT INTERVAL CONTOUR 50 nT INTERVAL CONTOUR 250 nT INTERVAL CONTOUR 1000 nT LAKE OR RIVER

81'

SURVEY SPECIFICATIONS -Line spacing: 50 m -Mean terrain clearance: 30 m -Line direction: N-S -Tieline direction: E-W -Survey date: November 23rd to 24th, 2007 -Line kilometres: 141 km

GEODETIC SPECIFICATIONS -Map projection: UTM -Datum: NAD-83 -UTM zone: 17 north -Central meridian : 81 · west

AIRCRAFT -Be1l206L, callsign: C-GMHY -Aircraft elevation (MTC): 60 m (nominal) -Average aircraft speed: 22.3 mls -GPS receiver: Crescent R120 DGPS -GPS sample rate: 0.1 s

MAGNETOMETER SPECIFICATIONS -Model: Geometrics G-823A caesium vapour -Mounting : Towed bird, 3 sensor

-Cable length: 30 m -Sample rate: 10 Hz -Sensitivity: 0.002 nT (sqrt (Hz))

PROCESSING SPECIFICATIONS -Diurnal correction -Lag correction -Tie-line levelling -Total field enhancement using horizontal gradients

LOCATION PLAN

NTS 42A02 48·'+--------------------------------------

NTS 41P15



ENHANCED TOTAL FIELD nT Contract: M-07428

Scale: 1: 20000 Drawing by A. Beaudoin, tech . Checked by I. D'Amours, Eng.

Date: December 2007 Drawing no.: 07-12-701-00

Processed by O. Letourneau, Phys. Approved by R. Paul, Eng.


513000

0 0 0 N N

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0 0 0

N C")

'"

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513000

250 0 1IiiiiII __

-80'49' 514000

+

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+ 514000

-80 '49'

Scale 1 :20000 250 500 750

metres NAaJJ / ltrMzone 17N

-80'48' 515000

U1 W N N 0 0'" O~

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U1 w N

0 0 0

U1 w .. NOO 0 ' 0'" 0 0

U1 w <D 0 0 0

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515000 -80'48'

1000 1250

0.683

0.270

0.205

0.165

0.135

0.115

0.100

0.090 0.080

0.070

0.060

0.050

0.045

0.035

0.030

0.D25

0.015

0.010

0.005

0.000

-0.010

-0.015

-0.025

-0.030

-0.035

-0.045

-0.050

-0.060

-0.070

-0.075

-0.085

-0.095

-0 .110

-0.120

-0.140

-0.160

-0.180

-0 .215

-0.416

VLF Total Field (ppm)

LEGEND

INTERVAL CONTOUR 0,005 ppm INTERVAL CONTOUR 0.025 ppm INTERVAL CONTOUR 0.1 ppm LAKE OR RIVER

81°

SURVEY SPECIFICATIONS -Line spacing: 50 m -Mean terrain clearance : 30 m -Line direction: N-S -Tie line direction: E-W -Survey date: November 23rd to 24th, 2007 -Line kilometres: 141 km

GEODETIC SPECIFICATIONS -Map projection: UTM -Datum: NAD-83 -UTM zone: 17 north -Central meridian: 81 ° west

AIRCRAFT -Bell 206L, callsign: C-GMHY -Aircraft elevation (MTC): 60 m (nominal) -Average aircraft speed: 22.3 m/s -GPS receiver: Crescent R120 DGPS -GPS sample rate: 0.1 s

AIRBORNE VLF SYSTEM SPECIFICATIONS -Model : TOTEM-2A MULTI-CHANNEL -The VLF transmission antenna used was the NAA (24.0 kHz) , in Cutler Maine

-Accurate frequency selection: from 15kHz to 24 kHz: selectable for each channel in 100Hz steps

-Sensitivity range: from 130 ,uVI m to 100 mVlm at 20 kHz: 3dB down at 14kHz and 25 kHz

-VLF signal bandpass: -3 Db at ± 80 Hz: < 4 % variation at ± 50 Hz

-Internal noise: 13 ~lV m RMS

PROCESSING SPECIFICATIONS

-Lag correction -Microlevelling

LOCATION PLAN

NTS 42A02 48°'~ ________________________________ ~ ____ ___

NTS 41P15



VLF TOTAL FIELD Contract: M-07428

Scale: 1: 20000

Drawing by A. Beaudoin , tech .

Checked by I. D'Amours, Eng.

Date: December 2007

Drawing no.: 07-12-704-00

Processed by O. Letourneau, Phys.

Approved by R. Paul. Eng.


HELICOPTER-BORNE MAGNETIC AND VLF GEOPHYSICAL …

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