LOGISTICS REPORT a MOVING COILS SURFACE PEM SURVEY

L O G I S T I C S REPORT

on a

MOVING C O I L S SURFACE PEM SURVEY

for

CHEVRON STANDARD L I M I T E D

MINERALS D I V I S I O N

IRON MOUNTAIN, NICOLA P R O V I N C I A L FOREST B R I T I S H COLUMBIA

GEOTERREX L I M I T E D P r o j e c t 85-907

OTTAWA, ONTARIO D e c e m b e r 1981

L

A . SOON T . THOMPSON G e o p h y s i c i s t s .

TABLE OF CONTENTS

I. INTRODUCTION

11. LOCATION AND ACCESS

111. SURVEY STATISTICS

111.1 Personnel 111.2 Equipment 111.3 Production

IV. SURVEY PROCEDURE

V. CONCLUSIONS AND RECOMMENDATIONS

I. INTRODUCTION

During the period from September 21, 1981 to October

19, 1981, a Moving Coils PEM survey was carried out on

Iron Mountain, near Merritt British Columbia, by

Geoterrex Limited of 2060 Walkley Road, Ottawa, Ontario $ 7 0

\> 0 Y 0 for Chevron Standard Limited, Minerals Division, 3 21J "

/ 'V of Vancouver, British Columbia. , Ot

19 83' $7 'L .(,b

9 The-survey was conducted on two grids, A.N. and B.N., with

a combined total of 50.6 line kilnmetres surveyed.

The purpose of the PEM survey was to locate any anomalous

readings which may be indicative of possible mineralized

zones.

Geoterrex supplied a four man crew consisting of two

geophysicists, Mr. T.G. Thompson and Mr. A. Soon, plus two

assistants.

11. LOCATION AND ACCESS

Iron Mountain is located approximately 10 kilometres

south of Merritt in the Nicola Provincial Forest area

of British Columbia.

Access to the survey area was by gravel mountain road,

leading to a microwave tower at the peak, off of the

Coldwater River Road. Further access to the grid lines

was by four wheel drive on a number of logging roads.

FIGURE 1

Survey Area Location Map

111. SURVEY STATISTICS

111.1 Personnel

The following personnel were directly involved in the

completion of the survey:

Andy Soon Geophysicist c/o Geoterrex Limited 2060 Walkley Road Ottawa, Ontario K1G 3P5

Trevor Thompson Geophysicist c/o' Geoterrex Limited 2060 Walkley Road Ottawa, Ontario KlG 3P5

Randall Steeds Field Assistant c/o Geoterrex Limited (Temporary) 2060 Walkley Road Ottawa, Ontario K1G 3P5

Brian Fleming Field Assistant c/o Geoterrex Limited (Temporary) 2060 Walkley Road Ottawa, Ontario K1G 3P5

All members were present during the entire survey from

September 21 to October 19, 1981.

Interpretation is to be carried out by Geoterrex Ltd, after

examination of the results by Chevron Standard Limited.

111.2 Equipment

Geoterrex Limited provided the following equipment:

1. Vehicles: One 1981 Chevrolet Van rented and one 1981

Chevrolet Blazar four wheel drive rented.

2. One Crone Geophysics PEM system with specifications

as follows:

a) Transmitter: output voltage: 24 volts

S/N 21 time base : 10.8 msecs.

powered by: 2-12 volt rechargable

batteries mounted on a pack frame (2 sets)

b) Transmitter Loop: diameter: 15 metres closed coil

c ) Receiver: measured quantities: Primary shut off

voltage pulse (PP)

s/N 9 Time derivative of the transient

magnetic field by integrating sampling over

eight contiguous time windows

Time base: 10.8 msec.

CHANNEL NO.

PP

1

2

3

4

5

6

7

8

WINDOW

-100 to 0

100 to 200

200 to 400

400 to 700

700 to 1100

1100 to 1800

1800 to 3000

3000 to 5000

5000 to 7800

WIDTH

100

100

200

300

400

700

1200

2000

2800

MID PT.

-50

150

300

550

900

1450

2400

4000

6400

Timing - a telemetry link is maintained by radio signal or

by direct cable link, between the transmitter and

receiver.

Sampling - Sample and Hold: Receiver averages 512 readings for all channels and stores for display.

Continuous: Running average for all channels

is stored, enabling operator to reject thunder-

storm spikes and reject noise by visual inspection.

powered by: 2 internal 12 volt rechargeable gel batteries

d ) Receiver coil: ferrite cored antenna, with preamplifier

(20dB amplification) mounted on a tripod.

S/N 22 powered by: 2-9V disposable transistor

b a t t e r i e s .

111.3 Production

Overall production based on line kilometres per pro-

duction day was 2.53 kilometres per day.

Total number of production days: 20

Total number of line kilometres Grid A.N.: 17.95

Total number of line kilometres Grid B.N.: 32.65

Total number of PEM lines surveyed: 46

Several days were lost during the survey due to rain and

snowfall in the grid area which was at elevations over

4500 Et A.S.L. The rough topography and nature of the

lines cut slowed production'somewhat, as it was difficult

and sometimes dangerous to move the equipment along the

lines and lay out the transmitter loop.

After :.consulting with the' representative of the client

and the line cutting contractor5 party chief, it was agreed

that lines would be chainsawed to improve them. This made

the survey procedures safer and improved production consider-

ably.

IV. MOVING COILS PEM SURVEY PROCEDURE

The Crone PEM s y s t e m t r a n s m i t s an on-of f -on n e g a t i v e -

o f f t y p e c u r r e n t waveform i n t h e t r a n s m i t t e r l o o p , which

c r e a t e s a p r i m a r y m a g n e t i c f i e l d o f t h e same s h a p e . When

t h e c u r r e n t i s s w i t c h e d o f f or on t h e r e is a f i n i t e d e c a y

o r r i s e ramp. T h i s ramp i n d u c e s eddy c u r r e n t s i n a con-

d u c t o r t h r o u g h which t h e f i e l d p a s s e s . A t t h e end o f t h e

t r a n s m i t t e d ramp, t h e s e eddy c u r r e n t s d e c a y a t a f i n i t e

r a t e , g e n e r a t i n g t h e i r own s e c o n d a r y m a g n e t i c f i e l d . T h i s

f i e l d w i l l d e c a y w i t h time. The r e c e i v e r co i l p i c k s u p

t h i s m a g n e t i c f i e l d and i t is measu red by t h e r e c e i v e r u n i t .

The s e c o n d a r y f i e l d is measured o v e r e i g h t d i f f e r e n t t i m e

s p a n s , o r "windows", a s an a v e r a g e o f t h e f i e l d o v e r e a c h

window and is d i s p l a y e d a s a f r a c t i o n o f t h e p r i m a r y f i e l d

i n p a r t s p e r t h o u s a n d ( m i l l i v o l t s p e r v o l t ) .

T h i s PEM s u r v e y u t i l i z e d t h e moving coi ls c o n f i g u r a t i o n

which is a n i n - l i n e s u r f a c e s u r v e y method. The t r a n s m i t t e r

l o o p was a 1 5 metre round l o o p which was moved a l o n g t h e

g r i d l i n e s a t 50 metre i n t e r v a l s . The r e c e i v e r was a

standard PEM survey receiving coil which was moved along

the same line 100 metres behind the transmitter. The

plotting point for survey reading measurements is midway

between the transmitter and receiver.

VI. CONCLUSIONS AND RECOMMENDATIONS

The s u r v e y d a t a a c q u i r e d from t h e I r o n Mountain g r i d

g e n e r a l l y shows a v e r y f l a t background r e s p o n s e . T h i s l a c k

o f a v a r y i n g background c o n d u c t i v i t y was r e c o g n i z e d i n t h e

f i e l d so t h a t a t es t o f t h e P.E.M. s y s t e m was c a r r i e d o u t .

The s u r v e y crew p r o c e e d e d to run a t e s t l i n e a l o n g a d i r t

r o a d i n t h e a r e a which was known t o cross a b u r i e d p i p e l i n e .

The r e s u l t s o f t h e t e s t i n d i c a t e d t h a t t h e equ ipmen t was i n -

d e e d f u n c t i o n i n g p r o p e r l y .

The f l a t background r e s p o n s e is c o n s i d e r e d to b e a r e a l -

i s t i c v iew o f t h e a r e a . However, p rob lems were e n c o u n t e r e d

which.may h a v e a f f e c t e d some o f t h e i n d i v i d u a l r e a d i n g s .

The t h i n o v e r b u r d e n was i n s u f f i c i e n t i n numerous p l a c e s

t o s u p p o r t t h e e x i s t i n g t rees . T h i s r e s u l t e d i n a l o t o f

d e a d f a l l a s t h e t rees c o u l d n o t s t a n d a f t e r d y i n g . The l i n e

c u t t e r s were t o l d t h a t t h e i r j o b was t o a x e c u t o n l y , b u t

a f t e r c o n s u l t a t i o n w i t h t h e c l i e n t ' s r e p r e s e n t a t i v e and

t h e G e o t e r r e x crew, t h e y began c u t t i n g w i t h c h a i n s a w s on

s u b s e q u e n t l i n e s . T h i s improved p r o d u c t i o n o f t h e P.E.M. su r -

vey b u t p rob lems s t i l l e x i s t e d w i t h t h e 15m Tx l o o p . The

bush was d e n s e i n some a r e a s and o t h e r s t a t i o n s were l o c a t e d

o n uneven rock f a c e s making i t d i f f i c u l t t o l a y o u t t h e

l o o p i n a c i rc le even though a c o n s c i o u s e f f o r t was made

to d o so a t a l l s t a t i o n s . A l s o , t h e r e was n o means o f

communica t ion be tween t h e Tx crew and t h e Rx o p e r a t o r

e x c e p t f o r coded s i g n a l s g i v e n by w h i s t l e i n d i c a t i n g , " s y n c " ,

" p u l s e " , and "move to n e x t s t a t i o n " . T h e r e f o r e , i t was i m -

p o s s i b l e t o i n s u r e t h a t t h e Rx co i l was o r i e n t e d p e r p e n d i c u l a r

t o t h e same p l a n e a s t h e Tx l o o p to maximize t h e s i g n a l

s t r e n g t h . A b e t t e r means o f communica t ion may h a v e improved

t h e r e s u l t s somewhat a s i t would a l l o w t h e s u r v e y crew to

e l i m i n a t e t h e o r i e n t a t i o n p rob lem.

The s u r v e y c o u l d have been c o m p l e t e d i n less time had i t

b e e n . i n i t i a t e d e a r l i e r i n t h e s e a s o n . D u r i n g t h e s u r v e y

t h e r e were s e v e r a l d a y s l o s t due to s n o w f a l l . Al though t h e

snow d i d n o t a c c u m u l a t e t o any g r e a t d e p t h , t h e n a t u r e o f

t h e t e r r a i n and s l i p p e r y d e a d f a l l made o p e r a t i o n s h a z a r d o u s

when t h e r e %!as snow p r e s e n t . O p e r a t i r ~ g o n snow l ed to s e v e r a l

f a l l s r e s u l t i n g i n minor i n j u r i e s . A f a l l a t t h e end o f t h e

s u r v e y b a d l y damaged t h e P.E.M. t r a n s m i t t e r so t h a t t h e f i n a l

200 metres o f l i n e 5 4 o f G r i d B.N. c o u l d n o t b e c o m p l e t e d .

I t is o f g r e a t a d v a n t a g e t o i n i t i a t e m o u n t a i n s u r v e y s ,

particularly those at higher elevations, early enough so

that they can be completed well before the first snowfalls. ,

This could be particularly advantageous in the Iron Mountain

area because it is reportedly a normally dry climate area.

Respectfully submitted,

Trevor G. Thompson Geophysicist.

<

PEM MOVING COILS SURVEY

RECEIVER OUTPUT VOLTAGE

C H I t : : : : : : : : : . p e c . : - - * i : I . . . c . F : : : $

a t : : - 100

a ¶ ~ - ~ - - - ~ - . - . - ' . . ~ ; : - : : : : : : : r - - - - - - - . ; ~ d

i 5

C n r : : . : : : : -

Cns , I ;, . . , : : : , : I : : I .&-*.--.*.. .-

w 0-

-10 g . . - 0 - . E - -10

* s r;

: E a

-100 w r --i- - /

W r

COIL SPRCING : 100 n TX LOOP SIZE : 15.0 n O I R ~ E T E R

T I RE BASE : 10 .8 flS

HORIZONTRL SCRLE : 1 :7500

SURVEYED BY : RS.TT.

ORTE : SEPT / 1981

SURVEYEO 4 COnPILED BY CEOTERREX LTD.

PROJECT NO. 85-907

CLIENT t CHEVRON STANORRC LTO*

AREA : IRON ROUNTAIN PROJECT

GRID CODE : A.

L I N E : 4200N

+



I w . . - - - . . - A . - -*-.-:: :A':'-

: 5

U ( 4 - . - . - .---.l:. . : - . - - - - : . : . -

us - : - a m . . .'): f . . . :- : I : . . - --:. .q

m - ,. I0 3 - L

-0 - H - -10 fj

ii -100 ua f f

U ( 7 w - - - - . f-2~:: - * - .

COIL SPACING : 1 0 0 n TX LOOP SI EE : 1 5 . 0 n DIAIIETER

T IRE BASE : 1 0 . 8 MS

HORIZONTAL SCALE : 1 :7500

SURVEYED BY : AS-TT.

ORTE : SEPT / 1981

SURVEYED 4 ConPiLEo BY GE OTERREX LTD.

PROJECT NO. 85-907

CLIENT : CHEVRON STRNDRRO LTD*

AREA : IRON MOUNTRIN PROJECT

GRID CODE : R.

L I N E : 4300N

1


RECEIVER OUTPUT VOLTRGE

ull

L n t * - - - . : : : : : ; : : ~ ~ : . - - . : : . ~ - - - -.;-

100 C ( ( ¶ - . . . . . : . - : : : , . : . . . - . - - d : . * - - . . . . . + : : F s

a' - - - r w . . . - . :c*....--~---.:

a @ *: - - . - - - . - - - . - . ...-----

c. -10 5 . . - 0 -

E , -10 5

. E a - Y

-100

COIL SPACING : 100 n TX LOOP S I Z E : 15.0 ?l DIRHETER

T I R E BRSE : 10.8 ns HOR I ZONT RL SCRLE : 1 :7500


Dl31 E : SEPT / 1981 I

SURVEYEG 4 COHPlLEO BY GEOTERREX LTD

PROJECT NO* 85-907

CL 1 ENT CHEVRON STRNORRD LTD.

RRER : IRON flOUNTRlN PROJECT

GRID CODE : Re

L I N E : 4400N

2



= P a Y Y Y Y Y Y Y Y

0 0 0 0 K ii t 0

rn PY f 4 ! I, D H 0

U ( C a:::--.----:---.*::;::*

100

; f f : l ! k O ( 4 , . . - - - . - - - . : . . I . . : . . . - I:::.::

b

-10 7 - e

- 0 -

4 - - I0 3

- i!

A

- - : : : : I-: : :-: : : : 4

O ( 0

PROJECT NO. 85-807

+

COIL SPRCING : 100 n SURVEYED 4 ConPILEo BY CEOTERREX LTD

TX LOOP SIZE : 15 .0 n OIRHETER

T I ~ E BASE : 10.8 ns HORIZONTRL SCRLE : 1:7500

SURVEYED BY I AS.TT.

DATE : SEPT / 1981 L

CL I ENT : CHEVRON STANDARD LTD*

C1R EF\ : IRON flOUNTRIN PROJECT

GRID COOE : A.

L I N E : 4500N

PEM M O V I N G C O I L S S U R V E Y

R E C E I V E R O U T P U T V O L T A G E

C W I I . . . . . . . . . . . . . . . . r . * . . . : . . . . . . . . . . . a . . . b i l c . . ,

100 r : : ; L . . . . , - - - > r

( .

cn' b . . . . . . . . . .

C W S - . . . : : ; : ; : : : : - - - - -

I)

c. - 10 g - L

- 0 : a

t - - to 3 . C z - - Y

U W

u

CW8 - : : : : : : : : ; : : : : . : _ ) - - F w -100

0( 7

04 8

COIL SPACING : 100 n T X LOOP S I Z E : 1 5 . 0 fl DIAflETER

T I R E BASE : 10 .8 flS

HORIZONTAL SCALE : 1:7500

SURVEYED BY : AS.TT.

DATE : SEPT / 1981

SURVEYED 4 COflPILEO BY GEOTERREX LTD

PROJECT NO. 85-907

CL l ENT : CHEVRON STANDARD LTD.

AREA : IRON HOUNTRIN PROJECT

GRID CODE : A.

L I N E : 4600N

cnt , : . - - . : , : . : I

PEN MOVING COILS SURVEY


COIL SPACING : 1 0 0 n TX LOOP S I Z E : 1 5 . 0 tl DlRRETER

T I R E BASE : 10.8 mi HORIZONTAL SCflLE : 1 : 7 5 0 0

SURVEYED BY : A S - T T .

DATE : SEPT / 1 9 8 1

SURVEYED 4 ConPILEo BY GEOTERREX LTO.

PROJECT NO. 8 5 - 9 0 9

C L I E N T : CHEVRON STANDARD L T D *

AREA : IRON nOUNTAIN PROJECT

GRID CODE : A.

L 1 NE : 4 7 0 0 N

I



COIL SPACING : l o o n TX LOOP SIZE : 15 .0 f l DlAtlETER

T InE BASE : 10.8 ns HORIZONTAL SCRLE : 1 :7500

SURVEYED BY : AS6TT.

DFITE : SEPT / 1981

GEOTERREX LTO. SURVEYED 4 COnPILED BY PROJECT NO.

85-907

CLIENT : CHEVRON STRNDARD LTD-

AREA : IRON HOUNTAIN PROJECT

GRID CODE : A .

L INE : 4800N

CULTURE LEGEND PL - POWER L I N E

w

c n s p- - - '*,' -' w ' - J b 1

i



COIL SPACING : 100 fl

T X LOOP S I Z E : 15.0 tl DIRHETER

T I ~ E BRSE : 1 0 . 8 ns HORIZONTAL SCALE : 1 :7500

SURVEYED BY : RS.TT.

DRTE : SEPT / 1981

I CLIENT : CHEVRON STRNDRRD LfO I

SURVEYED 4 COMPlLEO BY WOTERREX LTD.

1 RRER : IRON MOUNTAIN PROJECT I

PROJECT NO. 85-907

I GRID CODE : R . I 1 L I N E : 4900N I

O I L * : - - - - --f-:::: I

-

PEM MOVING C O I L S SURVEY


CULTURE LEGEND P L - POWER LINE

COIL SPACING : 1 0 0 H

TX LOOP S I Z E : 1 5 . 0 tl DIAHETER

TI HE BRSE : 10.8 ns HORIZONTflL SCALE : 1 :7500

SURVEYED BY : FISeTT.

ORTE : SEPT / 1981

CEOTERREX LTO. SURVEYED 4 COHPILEO BY PROJECT NO*

85-807

CLIENT : CHEVRON STANDRRO L I D .


GRID COO€ : A.

L I N E : 5000N

. i



cn t

100

c n r , . .

cn s

- C

t U

C - 10 g - C

,o c - 2 .. -I0 g . E

t

cn 7

cn e

I PL

CULTURE LEGEND PL - POWER LINE

COIL SPACING : 100 n TX LOOP SIZE : 15.0 ll OIRnETER

T InE BASE : 10.8 ns HORIZONTAL SCALE : 1 :7500


OAT E : SEPT / 1981

*

SURVEYED & COMPILED BY GEOTERREX LTD.

PROJECT NO. 85-907

CLIENT : CHEVRON STANDARD LTD.


GRID CODE : A .

LINE : SlOON

PEM M O V I N G C O I L S SURVEY

RECEIVER OUTPUT V O L T A G E

w a ::-.i- " ' --4-v cn r -....-...-:.d

C - I0 g - L

!:lei t

t - 2 - u

-1w

cn 7

en 8

I


COIL SPACING : 100 n T X LOOP S I Z E : 1 5 . 0 Pl DIAnETER

T I H E BASE : 1 0 . 8 HS


SURVEYED BY : AS.17.

DATE : SEPT / 1981

P L

SURVEYED 4 COHPILED BY CEOTERREX LTD

PROJECT NO. 85 -907

CLIENT : CHEVRON STANDARD LTO.


GRID CODE : A .

L I N E : 5 2 0 0 N

>



100

I 3 3 , : : : ; : : : F

- . - + - i I.

u C - 10

c n r - --: - 0 3 : :

, -10 8 . 6

C H S -- - . . - I = - . 2 L

-100

cn 7 4

Cn 8

I PL

1

CULTURE LEGEND PL - POWER L INE

COlL SPRCING : 1 0 0 fl

T X LOOP size : 15 .0 n O I R ~ E T E R

T I R E BASE : 10.8 flS

HORIZONTRL SCALE : 1 :7500

SURVEYED BY : RS.11.

DRTE : SEPT / 1981

SURVEYED 4 CONPILED BY GEOTERREX LTD.

PROJECT NO* 85-907

CL 1 ENT : CHEVRON STANDARD LTO-


GRID CODE : A.

L I N E : 5300N



cn' 2 I00

00 , : : : : : : : . - - ' : ; : . . . " : : ' . : ;

I F i Il

C - 10 g C

= -10 3

"' O( 8 1 r' & =

Ui 8

U17

cn 8


COIL SPACING : 100 H

TX LOOP S IZE : 1 5 . 0 H DIRHETER

TINE BASE : 10.8 HS

HORIZONTRL SCALE : 1:7500

SURVEYEO BY : AS-TT .

DATE : SEPT / 1981

I PL

SURVEYEO h COHPlLEO BY GEOTERREX LTD.

PROJECT NO* 85-907

CLIENT : CHEVRON STRNDRRO LTD-

RREA : IRON HOUNTAIN PROJECT

G R I D CODE : R.

L I N E : 5400N

1



U c t - - - : : - : : - . . . . . *

100

0 1 -: - . - .,., f

/

U c 4 P W I L I Y = + . . - ~ . . . - . ~ - I : : t . . . . , /

01s -i:i:~-..u-u.

C - I0 g - C

-0

- 5 - -10 t

- U

01 0

01 7

s, P L

i



TX LOOP S IZE : 15 .0 H DIRRETER

TIHE BASE : 10.8 0s


SURVEYED BY : AS-TTe

ORTE : SEPT 1 1981

SURVEYED 4 COHPILEO 8Y GEOTERREX LTO.

PROJECT NO. 85-907

CL 1 ENT : CHEVRON STANDARD LTO.


GRID CODE : A *

L INE : S500N A

PEM M O V I N G C O I L S S U R V E Y

R E C E I V E R O U T P U T V O L T A G E


COIL SPRCING : loo n TX LOOP SIZE : 15.0 tI OIAHETER

TIHE B A S E : 10.8 tIS

HORIZONTRL SCRLE : 1 :7500


ORTE : SEPT / 1981

SURVEYED 4 COflPILEO BY GEOTERREX LTO

PROJECT NO 85-907

CLIENT : CHEVRON STRNOARO LTD.

ARER : IRON nOUNTRlN PROJECT

G R l O CODE : A .

LINE : 5600N

1



U l t * ~ : : : ~ ~ . ~ ~ ~ ; ~ ~ ~ : - - ~ . - -

I W Ul s

i f

U l r , t : ; ; - . : : - " t ' - - : . - . - :

0

U I S , - r - I - - . : : : - - - - ' - : : : :

a C - 10 5

L

- O : t

, -10 8 . ti

L - 2 L

-100 U ( 8 , : : :1 : : : f ; : - : :9 '

cn 7

I PL

4


COIL SPBCING : 100 n TX LOOP S I Z E : 15 .0 ti DIRHETER

TIHE BASE : 1 0 . 8 HS


SURVEYED BY : RS-TT.

DATE : OCT / 1981

SURVEYEO 4 CORPILEO BY GEOTERREX LTD.

PROJECT NO- 85-907

CLI ENT : CHEVRON STRNORRO LTD-

BRER : IRON ROUNTRIN PROJECT

GRID CODE A.

L I N E : 5700N

4



COIL SPRCING : 100 n TX LOOP SIZE : 15.0 n DIAnETER T I tlE BASE : 10.8 HS



ORTE : OCT / 1981

SURVEYED 4 COHPILED BY GEOTERREX LTD

PROJECT NO. 85-907

CLIENT : CHEVRON STRNDARO LTD.

ARER : IRON HOUNTRIN PROJECT

GRID CODE : 8.

LINE : 9800N

c n s w-: .+ - - - ~ k i %

PEM M O V I N G COILS SURVEY


PROJECT NO. 85-907

*

COIL SPRCING : l o o n SURVEYED 4 COflPlLEO BY GEOTERREX L T D *

TX LOOP S I Z E : 1 5 . 0 fl DIAflETER

T I ~ E BASE : 1 0 . 8 ns HORIZONTAL SCRLE : 1 : 7 5 0 0

SURVEYED BY t RSeTT.

DATE : OCT / 1 9 8 1

C L I E N T : CHEVRON STRNDRRD L T D *

ARER : IRON HOUNTRIN PROJECT

W I D CODE : 8 .

L I N E : 3 9 0 0 N



COIL SPRCING : 100 H

TX LOOP S I Z E : 15.0 4 DIRHETER

TlHE BASE : 1 0 . 8 PlS

HORI ZONTRL SCALE : 1 :7500

SURVEYEG BY : R S - I T -

OR1 E : OCT / 1981

SURVEYEO 4 COHPILED BY GEOTERREX LTO .

PROJECT NO* 85-907

CLIENT : CHEVRON STRNORRO LTD-

RRER : IRON MOUNTRIN PROJECT

GRID COOE : B .

L I N E : 4000N

c n t , - . - - . - p i

t


R E C E I V E R OUTPUT V O L T A G E

COIL SPACING : 100 n TX LOOP S I Z E : 15.0 fl DIAIIETER

T I HE 8RSE : 10.8 flS

HORIZONTAL SCRLE : 1 :7500

SURVEYED BY : AS.TT.

DATE : OCT / 1981

SURVEYED 4 COflPILEO BY GEOTERREX LTO.

PROJECT NO* 85-807

CLIENT : CHEVRON STANORRD LTD.

RRER : IRON nOUNTAIN PROJECT

GRID CODE : 0 .

L I N E : 4OOON



c n t - . . - . : : : . . - . - : : : : : ! .

: : - - . . : . ,

100

en r - - > - I

c n r . . . : .

cn s

I

C

, I0 g - L

-O Z 3 - L

, -10 2 .L W

z 1 - W . U Y - .L

-100

cn 7

COIL SPACING : 1 0 0 fl

TX LOOP S I Z E : 15.0 fl DIAMETER

T I n E BASE : 10.8 flS



DATE : SEPT / 1981

SURVEYEO 4 COflPILED BY GEOTERREX LTD*

PROJECT NO. 85-907

CLIENT : CHEVRON STANDARD LTD*

AREA : IRON tlOUNTAIN PROJECT

GRID CODE : 8 .

L I N E : 4100N



SURVEYED BY : A S - T T . I 1 GRID CODE : B . I

COIL SPACING : 1 0 0 H SURVEYED 4 ConPILED B Y

GEOTERREX LTD.

DATE : SEPT / 1981 1 L I N E : 4200N I I

PROJECT NO. 85 -907

TX LOOP S I Z E : 1 5 . 0 H OIAUETER

TIflE BASE : 1 0 . 8 HS CLIENT : CHEVRON STANDARD LTD.

HORIZONTAL SCALE : 1 :7500 AREA : IRON MOUNTAIN PROJECT



cnl - - . . : : - . . . . . . - : : - - - - -

mil - : : . , . a & : : : . : -

100 cnl -.- - -

k

01 4

cn 6

U

C

, I0 j e

-O : a

t , -10 8

J : Y D . K

-100 4 -

Ln 1 ---% : : :

COIL SPRCING : 100 fl

TX LOOP SIZE : 15.0 fl DIRflETER

T l n E BASE : 10.8 US


SURVEYED B Y : AS-TT .

DRTE : SEPT / 1981

SURVEYED 4 COtIPILED BY CEOTERREX LTD-

PROJECT NO. 85-907

CLIENT : CHEVRON STANDARD LTO.

AREA : IRON flOUNTAIN PROJECT

GRID CODE : 8 .

L 1 NE : 4300N

r



c n l t s ' - . . C - * - . - ~ . ' ' " ' ' . ^ - - - . A . - . . .

at t-

100 c n ¶ , : : + : : : : : : - I5

: : : : : : - . . . % : ; : : : - - . : . : -

C

- t o 2 - 0

a - b.

, -10 g

C O I L SPACING : 100 M

T X LOOP S I Z E : 1 5 . 0 M DIAnETER

T I H E BASE : 10.8 MS

HORIZONTAL SCALE : 1 : 7 5 0 0


DATE : SEPT / 1981

SURVEYED 4 COMPILED B Y GEOTERREX LTD

PROJECT NO. 8 5 - 9 0 7

CL 1 ENT : CHEVRON STANDARD LTD.

AREA : IRON MOUNTAIN PROJECT

GRID CODE : 8 .

L I N E : 4 4 0 0 N

PEM M O V I N G COILS SURVEY


a 0 0 n

U I I ic. . ::-:. - - - -

c u t

1W

cns * : ? ? . : : : - : : : : . - . - : : : : : 0 : 5

4

c u s - : : : : : - ; : : : : + ? -

.- -10 g - L

'0 : a - L - -10 2 E - - =

: 2 a

01 s -100

01 9

cn 8

PROJECT NO* 85-907

+

COIL SPACING : 100 M SURVEYEO 4 COHPILEO BY GEOTERREX LTO.

TX LOOP S I Z E : 1S.O M DIRMETER

TIME BRSE : 10 .8 tIS


SURVEYED BY : CIS-TT.

ORTE : OCT / 1981

CLIENT : CHEVRON STANORRD LTD-

AREA : IRON ROUNTRIN PROJECT

GRID CODE : 8.

L I N E : 4500N

PEM M O V I N G C O I L S SURVEY

RECEIVER OUTPUT V O L T A G E

- -

COIL S P A C ~ N G : l o o n TX LOOP SIZE : 15.0 n DIR~IETER

T IHE BRSE : 10.8 ns HORIZONTAL SCRLE : 1:7500

SURVEYED BY : AS.TT

OflTE : OCT / 1981

I CLIENT : CHEVRON STANDARD LTD- I

SURVEYED a conprLEo eu GEOTERREX LTD.

( RRER : IRON NOUNTRSN PROJECT I

PROJECT NO. 85-907

I GRID CODE : 8 . I 1 L I N E : 4600N I



W l # : : : : : : : : : : : : : : : : : : - r . . :&.e%-+w-- - - 8


TX LOOP S IZE : 15.0 H DIAHETER

TIHE BASE : 10.8 ns HORIZONTAL SCRLE : 1 :7500


DATE : OCT / 1981

SURVEYED 4 ConPrLEo BY GEOTERREX LTD*

PROJECT NO. 85-907


ARE$ : IRON HOUNTAIN PROJECT

GRID CODE : B *

L I N E : 4700N

I

f - PEM

MOVING COILS SURVEY


'3 a a Y Y U Y Y 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 z rn Y C 2 Y .) 9 0 m

at

100 m r

- - - - I - - 1 i w r .-- -

QI s

C

-10 , - C

- O Z a - t - -10 g E t - Y U

Y a

-100

COIL SPACING : l o o n TX LOOP S I Z E : 1 5 . 0 M DlRMETER

TIME BASE : 10.8 MS



DATE : OCT / 1981 a

SURVEYED a COMPILED BY GEOTERREX LTD.

PROJECT NO* 85-907

CLIENT : CHEVRON STRNDARD LTD*

RR EA : IRON HOUNTAIN PROJECT

GRID CODE 0 -

L 1 NE : 4800N

&

PEM HOVING COILS SURVEY


c n l * : : : : : : : : : : : : : : : : : : : : : : : - ; : -- I

- . : : : : : : : t : : : : : 4 I;; Z

loo

Ti C

, I @ $ - Z - Z

- - t o ; . J

f

COIL SPACING : 100 n TX LOOP S IZE : 15.0 fl DIAHETER

TIHE BASE : 10.8 HS


SURVEYED BY : RSeTT.

DATE : OCT / 1961

SURVEYED 4 ConPILEo BY CEOTERREX LTD.

PROJECT NO. 85-907

CLIENT ~CHEVRONSTRNDARDLTD-

AREA : IRON HOUNTRlN PROJECT

GRID CODE : 8.

L I N E : 4900N



= t 0 8 n o

ui I

cnt

100

cn a ! E a C

-10 5 - C

- 0 - i

, -I0 g

8

cn r

cn 1

cn a

COIL SPRCING : 1 0 0 ti

TX LOOP S I Z E : 1 5 . 0 tl DIRnETER

r lnc a R s r : 10.8 ns HOR 1 ZONTRL SCALE : 1 :7500


DATE : OCT / 1981

SURVEYED COHPILED BY GEOTERREX LTD.

PROJECT NO. 85 -907

CLIENT : CHEVRON STRNDRRD LTD.


GRID CODE : B *

L I N E : SOOON



COIL SPACING : IOU n TX LOOP SIZE : 15.0 fl DlAnETER

TIHE BASE : 1 0 . 8 HS

HORI ZONTRL SCALE : 1 g 5 0 0

SURVEYED BY : AS.11.

DATE : OCT / 1981

SURVEYED 4 COflPlLED BY CEOTERREX LTD.

PROJECT NO. 85-907



GRID CODE : 8.

LINE : SIOON

LOGISTICS REPORT a MOVING COILS SURFACE PEM SURVEY

Documents

Transcript of LOGISTICS REPORT a MOVING COILS SURFACE PEM SURVEY