Document pmZ1xGXYE167vXD6wjKnko037
FILE NAME Colonial Sugar Refinery CSR
DATE 1960 Sept 15
DOC CSR111
DOCUMENT DESCRIPTION Letter to Senior Inspector of Mines Kalgoorlie with Govt Inspection Results from Wittenoom Mine
PLAINTIFF'S EXHIBIT
The Senior Inspector of Hincs
Hines Department
KALGOORLIE KALGOORLIE
KALGOCELIE
15th September 1960
The taken withthe to
following results were obtained recont --
visit to Fittonoon
the Hidget Impinger ~"
was over a 10 minute period A check Konimeter
impingor sample alco made with
that konimeter-
samplca were taken at regular intervals throughout the inpinger
One complo 1.c.
onother at 3
Konimeter sample was taken at the start
1/3 mins another at 6 2/3 mins and the final one
at the end 10 mirmtes
The recordc~ counts underground are as follows
level
53
&
-
Stope
Konimeter Samples
170 500 90 1000+
880 Konimeter Average
p.p.C.C.
24,921,600 24,921,60 Impinger Sample
300 p.p.c.c.
20,300 Achestos 10-40 microns in konizeter
r.p. cub ft
8,496,000 r.p.
cub
ft
samples 1 p.p.c.c.
F.P. c-o .
Asbestos 10-40 microns in impinger samples 2 p.p.c.c. 56,600
Temperatures 74.5D
c !ub ft GOT
The machinoman was boring in thro air flow with velocity fluctuating from 0-40 min
level 42" & Stope
;
Konimoter Samples
210 130 110 90.9
Konimeter Average
360 p.p.C.C. = 10,195,000 p.p. cub ft
Impinger Comple
540 p.p.0.0
15,692,800 p. . cub ft
Asbestos
Asbestos
10-40 microns nierams
in konimeter samples o p.p.c.c. ? p.p.c.f. in impinger sample 3 p.p.c.c.m 4,960
P.P. cub ft
Temperatures 78.50
747
This sample was taken at the tailman's position whilst the scraper was operating in a thro air flow with velocity
fluctuating from 0-25 min The action of the scraper, hoe
appeared to induce air movement
lovel 420 S Stope
Koninster Somples
400 500 370 440
Konimeter ^>verage ^>verage
850 D.D.C.C. = 24,072,000 p.p. cub ft
microns Impinger Sample
Asebatos 10-40
90 D.D.C.C. 2,548,800 p.f. cub ft in kenimeter complos 2 p.p.c.c. 56,600
Asbestos 10-40 microns in impinger samples
.pcub ft
3 p.p.c.c. 34,560
P.p. cub t
Temperatures 79D
76.57
The machineman was boring 50 from the ducting attached to a 12 E.F. installed at the manwar Air velocity 0 min The impinger result seems doubtful because this place was obviou ly dusty .
In
ew
2
3
:
level 428 6 Stope
,
f
f Kanimeter Samples
Samples Konincter . Konincter Average
yr;
470 130 60 420
.
540 p.P.C.C. s 19,692,800 p.p. cub ft
microno " Impinger Comple Asbestos 20-40 :
p.p. cub 150
C C. .O O
=
55,,1215,92005,900.
ft .
in konimater somplen 1 : .p.c.c 28,300
P cub It
Asteatos microna in impinger samples 1 p.p.c.c. 20,300
This sample who taken after the above zuchineron had extended bic ducting to the face While this cample sus bu"ng
taken the machineman was drilling hit holes in the astestos Seom, Air velocity 100 min past face
level 425 Stope Afternoon Shift
Konimoter Samples
1000+ 1000+ 1000+ 1000+ .
Konimeter Avarngo Imping.or Somple
23,320,000 1000+ c.c. 1350 p.p.c.C.
p.p. cub ft
30,232,000 .2 cub ft
impinger Acbostos 10-40 microns
Acbostos
microns
"*
in korincter samples =
in
;
None visible
"
"
to
Temper8a 1Dt7u7r .5o:s
This sample day ;
*
was tal after the
The time when the sample was taken would be
p.m. Air velocity thro stope 0 min
shift firings |. approximately 4.30
,
os
level 42 Stope
ms
fate
Konimeter Samples 800 600 350 180
oa
960 ... 27,187,200
St
Konimeter Average , 180 Pepe cube ~
... p.p. Impinger 9,062,000 emte
. Impinger Sample -
mierene in
=
cub ft
mierene
10-40 Aubentos mierene
in kontacter
impinger
comples = Rose visible
*
visible
Temperatures 81D 7401
This sample wat teken at the toilmen's position whilst .
the scraper wat op rating Also nearby was a cochinoman boring Air velocity thro sto ...eo min
4 level 12 Stope Afternoon shift
_ Konimeter Samplos
~
; Konincter Avorage
: Impinger Sample
1000+ 1000+ 1000+ 1000+
1100
Acboston
3
10-40
microns in kominster cample ~ I.p.c.c. ? p.p.c.f
impinger
cample
. 2 p.p.c.c. 56,600
F.j. cub ft
Temperatures ELD 7405
:
This compla vac taken at exactly the case spot as obove couple The tiao thon the sample tos taken would be
nyproximately 4.20 p.m. Air velocity thro stope 0 min
the
Main Adit
East of No 2 Turnout
zierons Konizctor Conplus
Kontacter Averago Impinger Sample
Ambostos Ambostos
80 150 20 50
150 1.P.C. mo
130. p.D.C.Cp.D..C.C.
in konineter
10-40 microno
et
impinger
4.248,00 4.248,000 4.248,000 3,671,600
-
comples
;
p.D. cub ft
f.p. cub ft
Kone visible
Te a :
re)
te ot
4-4 This sample in representativ3 ofthe:
Se.
tay
he Mae Te
sat
)
ents
+
te
sare.
es
Orase
610
mae
ow
3
Far
in odit as fresh intake air from outside
Atering approximately 30,000 cumina
Volume of n
:
Main dit at the Conveyor Transfer Point
Konimoter Camples . Koniecter Avelaze
740 90 550 560 p.1.C.C.
Impinger
Ablicston
Comple 10-40
250 microne
1.76.6 1 - ni
microns
230 .
200 p.p. cub ft
7,0
200 28,30 28,300 eT
O
fep. cub,
De .c.com .c.com
I cub
ft.
.
Acbeatos 10-40 microns in impinger ermplo
:
oe
2 p.j.c.c. 56,600 .p.cub ft
Pe
Temperatures 77D 702
7"
Intake
This sample is representative of the air after the
.
Intake from No 3 Citre Opening hna joined the Councost air in
the main adit Wost of the dust would be created by the trura
ferring of the ore from one conveyor onto another convejdr Volume of air past here approximately 50,000 cun^>no
Kain Adit ot ^-o5 leval Toca Chain Feeder
~
Konimeter Samples Konimeter Average
300 10 D.D.Cic =
200
-
p cub
450 12,744,000 Impinger Sample microns
450 Acbestos 10-40 microns
pipie.el @
in
kontueter
12,744,000 sonpic
i
pipi cub
p.p.c.co
28,300 Asbestos
P.P.
cub
Sti St^
.
Asbestos 10
4m0icrons in impinger samplo 2 p.p.c.c. 56,600
Tomperaturas 79.50 71.57
samp6lleegal and exhausted
This
exhausted from no
is representative of the air duch is
includes the dust created by the
Ross Chrin Feeder at No 5 level This air than passes into the
mainthis apiorifnltos en llo 5 level Approximately 3,000 cuzin passes
.
Ko tof the above dust counts appear high They were
all taken under avorago conditions therefore represent c true
overall picture All particles under 5 microna word counted
particles co.duct co.duct
except obvious selectos but it it doubtful
if this correct because many of the particles counted appeared
to be slightly lenticular is it is impossible to cay positively ;
whether not they are small nebestos p^rticles thay must be
treating treated as duct particles Acid
the sample would bo According
the only cure method of climinating unwanted autoriale According
to the published figures cilica partielec lect than 5 minrors
and sabottos particles 10-40 microns are the dangerous sizes
Therefore any ucbectes prticles I have counted as dust particles
are in effect baralous thereby giving m erroneous figure 80
Can be seen from the results the dust concentration in the main
adit is fairly high It times the dust from the mill also untera Not 3 and 4 lcvol intakes but unfortunately no cumple of Go
vete dusty air waa pouziblo beccuse whenover to vete glucent at
theso points the wind wou blowing fish the wan quarter thereby
tuking the duct away from intakes
The recorded counin in the mill tro as followsI
Transfer Clute from Kina
.
Kontseter Averago
330 p.P.C.C.
Acboctor 10-40 microns none visible
Picking Station
. :
ro
nicrons SCota e te - Konimeter Average
;
Asbestos 10-40 nicrons
J
Roniacter Average sicrme Cheston 10-40 sicrme
2p.p.p.cp..co.o..
-
4
a
Entrance to First Leg N1 Kubit Breaker
Store xamincter Camples
ny y' Konimeter Average
600 230 130 170 Cancel the 800 = 350 D.F.C.C. mw 9,912,000 pelle cub _be
*
| ImpingerImpinger Comple
15 I.B.C = 6,033,800 r.p. c bft ~
2 Asbeaton 10-40 micrane in konincter comple^1 ; c.c. 28,300
microne
Aabostos microne in impinger cample
P.D. cub it
2 p.p.c.c. 56,600 .
-
P.F. cab It
Central Porition in BALKANAN BALKANAN K111 disarra disarra
'
Konimeter Samples 260
Konimator Avaraga .. 490
310
190 220 13,621,900 S 13,621,900
7.p.
cub
ft
p.p.c.c. Eenple microns microns 315 r.^ ./t/ 3,920,000 5.cub St.
Rabostos Rabostos 20-40 microns in konicter ples 2
.
... Atbentos
P.P. 56,000 Atbentos 10-40 mieruna in impin or sample
P.P. 3 P.P.CC
. . ' 84,900
os
ers
Xy
P.D. cub St.
- South Bagging Station = -
*
*
a
610 Konimeter amples190 450 210 380 -:
;
Konincter Averago =
P.P.C.C 8: 17,275,200 P.P.
Impinger Samplo microna . 810 p.P @- 22,939,200 3.D.
cub cub
ft St.
p.p.c.c.28,300 Asbestos 10-40 microna in koninster sample i p.p.c.c. .
:
vee
P cub
.
Asbestos 10-40 micron impinger sample 4 p.f.c.c. 113,280
i
:
D.P. cub rt
2
Outside Mill Officoen Lawn .
Konincter Samples .. 200 80 150 20
Asbestos in Konimeter Average 180 p.pc.co '5,097,500
Impinger Sample
250 p.p.c.0 m 7,080,000
10-40 microns komineter samples 1
.
Asbestos 10-40 microna in impinger sample 3
c^flb p.p.
ft
p.p. mib ft
i.f.c.c. 28,300
.
y.p.c.c. 84,560
P.P. cub i t
From the foregoing figures it is easily seon that the konimeter and impinger do not compare vory well the konimeter
comples being much higher than limpinger samples The mucinge - of the konimotor samples being 621 p.p.cwhereas the average
of the incinger samples ic 451 v.p.C.O. v.p.C.O. However the impinger colloated much more asbestos 10-40 microns than did the koninoter The impinger averaged 2p.p.c.c. whilst the Konimetor - averaged 1. pop.o.c. pop.o.c.
ee
desired ee
As this to my first experience on this type of work
the results obtained may be treated with suspicion if so
eee
because on any lob practice maken perfect It appears ho^flever
that more work of this nature is desireable
Mes
oNLeen