HISTORICAL RESEARCH REPORTResearch Report TM/73/04

1973

Pneumoconiosis Field Research: Environmental conditions at Lady Victoria Colliery, 1971 Bradley A, Annis R

Copyright © 2006 Institute of Occupational Medicine. INSTITUTE OF OCCUPATIONAL MEDICINE No part of this publication may be reproduced, stored Research Avenue North, Riccarton, Edinburgh, EH14 4AP or transmitted in any form or by any means without Tel: +44 (0)870 850 5131 Fax: +44 (0)870 850 5132 written permission from the IOM e-mail publications@iomhq.org.uk

Pneumoconiosis Field Research: Environmental conditions at Lady Victoria Colliery, 1971

Bradley A, Annis R This document is a facsimile of an original copy of the report, which has been scanned as an image, with searchable text. Because the quality of this scanned image is determined by the clarity of the original text pages, there may be variations in the overall appearance of pages within the report. The scanning of this and the other historical reports in the Research Reports series was funded by a grant from the Wellcome Trust. The IOM’s research reports are freely available for download as PDF files from our web site: http://www.iom-world.org/research/libraryentry.php

HISTORICAL RESEARCH REPORTResearch Report TM/73/04

1973

ii Research Report TM/73/04

NOT FOR PUBLICATION • REPORT NO. TK/73/4

I N S T I T U T E O F O C C U P A T I O N A L M E D I C I N E

PHEUKOCOMTOSIS FIELD RESEARCH. ENVIRONMENTAL CONDITIONS AT LADY VICTORIA COLLIERY, 1971

by

A. Bradley and R. Annis

Environmental Branch,Institute of Occupational Medicine,Roxburgh Place,Edinburgh, EH8 9SU(Tel, 031- 67-5131) September, 1973.

REPORT NO. TM/73/4

I N S T I T U T E D ? O C C U P A T I O N A L M E D I C I N E

PNEUMOCONIOSIS FIELD RESEARCHENVIRONMENTAL CONDITIONS AT IADY VICTORIA COLLIERY, 1971

• by

A. Bradley and R. Annis

CONTENTS

SUI-IMARY

1. INTRODUCTION

2. LADY VICTORIA COLLIERY

2.1 Colliery details

2.2 Ventilation and dust suppression

2.3 Manpower and occupational groups

3. SAMPLING AND EVALUATION

3.1 Sampling programme

3.2 Sampling and evaluation

4. RESULTS AND DISCUSSION

4.1 Faceworkers

4.2 Non-faceworkers

4»3 Environmental summary

4.4 Relationship between control point and face concentrations

4»5 Total dust measurements

5. RECOMMENDATIONS

REFERENCES

TABLE 8.

REPORT NO. TMA3/4

I N S T I T U T E O F O C C U P A - T I O N A L M E D I C I N E

PNEIMOCONIOSIS FIELD RESEARCHENVIRONMENTAL CONDITIONS AT LADY VICTORIA COLLIERY, 1971

by . ' ...

A. Bradley and R. Annis

SUMMARY

This report tabulates respirable dust concentrations and compositions atLady Victoria Colliery for the period April, 1971 to March, 1972.Information regarding seams worked, outputs, methods of working', dustsuppression and manpower together with the associated dust concentrationsis preBented in a series of face charts.

At Lady Victoria Colliery the coal face mean respirable dust concentrationwas 2.8 mg/m . The mean ash content of respirable dust sampled was 39per cent and the mean quartz content of the ash 27 per cent, representinga concentration of 0.29

PNEUMOCONIOSIS FIELD RESEARCHENVIRONMENTAL CONDITIONS AT LADY VICTORIA COLLIERY, 1971

by

A.- Bradley and R0 Annis

1. INTRODUCTION

This report describes the environmental measurements made at Lady VictoriaColliery during the period April, 1971 to March, 1972« . Routine dustmeasurements were made with the K.R.E. Gravimetric Sampler, Type 113A.

The stratification of manpower and method of sampling, almost exclusivelyby volunteer instrument carrier, were as described previously (Johnston &Thomas, 1972).

Dust concentrations, which form the bulk of the measurements, are presentedmainly in a series of charts with relevant comment in footnotes0 Detailedon the charts are mean concentrations and compositional data for differentsites and occupation in each face area,,

The report gives general information about the colliery and notes occupation-al groups for which volunteer carriers were not obtained. The relationshipbetween dust concentrations at control sampling points in return roadways andon faces is examined and "total dust" concentrations are noted for someoccupational groups*

2. LADY VICTORIA COLLIERY

2*1 Colliery details

Location : Lady Victoria ia situated at Newtongrange in thesouthern part of the Lothians coalfield about onendle from its eastern limitc

Seams worked : The three seams worked during the period, indescending order, were the Splint (24:850)*,Kailbladea (24:871) and Parrot (24:940).

Quarterly output : April - June 1971 115 764July - September 1971 7.2 943October - December 1971 68 581January - March 1972 27 403 (National Strike)

Faces : Five faces worked during the period, all byAndertpn shearer,, Usually three faces in

/ production at ono time,

2.2 Ventilation and dust suppression

Average air quantities, temperatures and relative humidities taken in returnroads of faces are shown in Tables 1 - 5, Air quantities were taken fromthe colliery records and temperatures were taken by P.F.R» investigators.

The main methods of dust suppression, noted in the tables, were gel ampoules,and spray clusters on shearers. All transfer and loading points wereequipped with mist sprays.

Dust respirators were not usually worn at this colliery due to high tempera-tures and humidities on all faces.

* National Seam Correlation Code.

2.

2.3 Manpower and occupational groups

The total colliery population.at the end of the year was approximately 920,of whom 301 were classed as faceworkers, 459 as non-faceworkers undergroundand 160 as surface workers0

The number of occupational groups in 1971 was 33 -

Face groups 2? .Elsewhere underground groups 4Surface groups 2 .

3. SAMPLING AND EVALUATION

3.1 Sampling programme

Sampling was carried out mainly by means of volunteer instrument carriers(Johnston, 1972). The "random collier" technique was used only for surfaceoccupational groups where it waa not practicable to have volunteers.

The allocation of sampling effort is summarised in Table 6.

TABLE 6Allocation of sampling effort (NOO of samples) .

Sampling — JgnyironmentMethod ^____

Volunteer Carrier

Random Collier

Total

•Face

607

607

ElsewhereUnderground

211

211

Surface .

-5151

There were no unsampled groups during the year.

The volunteers carried as and when requested by the investigators but notmore than twenty times in the year,

3,2' Sampling and evaluation

The sampling methods and evaluation of samples, including determination ofcomposition and "total" dusts were as described previously (Johnston, 1972).

Compositional analysis of the respirable dust was carried out at theInstitute of Occupational Medicine and consisted of the determination foreach occupational group of the ash, quartz, kaolin, mica, calcium andmagnesium carbonate and iron carbonate contents of samples (Harrison, 1972/3),

4. RESULTS AND DISCUSSION

4»1 Faceworkers

Tables-1-5 show the mean concentrations of respirable dust for faceoccupational groups in each quarter of the year. Mean.ash and quartzconcentrations are also given,, Detailed comment on the face results areshown as footnotes to these tables.

4.2 Non-Faceworkers .

Details of mean concentrations and composition are summarised at Table 7for non-faceworkers groups0

. TABLE 7 •

Elsewhere Under ground., Development and Surface Samples

t

Occupational Group andO.G.S.N.

Developers F264 Coal

Stone

Elsewhere Underground Parrot Seam E62

Elsewhere Underground Kailblades SeamE63

Elsewhere Underground General E64

Officials E21

Tippler Attendants S7•

Others Surface SO

f Sample mean concentrations'. nifi/rc. •'

Respirable Dust- • Ash

2.0 *(46) +1.5

0.9 (3) 0.4

1.0 (79) 0.8

Io3 (46) 0.8

0.5 (68) 0.4

0.7 (13) 0.7

0.4 (6) 0.3

0.4 (45) 0.2

0.78

0.35

0.31

0.46

0.14

0.34

0.11

0.12

Quartz

0.09

0.04

0005

0.03

O.C1

0.13

.0.01

0.01

* ( ) Number of samples

•f Standard deviation

Dust concentrations away from tho faces were generally low. It will be seenfrom Table 7 that the majority of the development samples were taken in coalheadings where the dust concentration was greater than the one stone heading.Also the high quartz concentration, shown for the Officials group (E2l) is dueto 10 out of 13 of the samples having been taken on 1st East face in the ParrotSeam, where the quartz concentrations were much higher than for the other faces.

Seam N.C.B. Facefieam Corr. Coal Rank % Starting

Code Code Carbon Date. ,„ , . , . . . _ . . . i r^2'/ ' ' ~" '

Parrot 24;9liQ '802 March 1971

Site

Method of Working

Machine details

Dust suppression

Supports

: Site • • •

Occupation(Filling Shifts)

O.G.S.N,

N:imber of Men In Occupational Group

Mean Respirable 1st Quarter

Oust 2nd Quarter

Concentration 3rd Quartor

4th Quarter

mg/me .Year

Mean Sample Concentration

[ for Site ' mg/m8

Ash Concentration mg/mB

Quartz Concentration mg/m*

:..-.. * *

. . . „ , . ,

Occupation(Preparation Shifts)

O.G.S.N.

Number of Men in Occupational Group

Mean Respirable Dust Concentration

for Occupation mg/m*

Mean Sample Concentration

forSite .. mg/m8

Ash Concentration mg/m8

Quartz Concentration mg/m8

TABLE 1

FACE SUMMARY

t - - —L- L. J-J- — II

Faco Typo of Face Length HeightFinishing " - - J . . . U . . .- . . . ...

Date Single unit"".' Long wall 130n 1,07m

Advancing

INTAKE ROADWAY INTAKE STABLE |

0

Hand filled Hand filled

' Gel ampoules fel ampoules

3,66ta arches with Doivty props! 0,46n stilts Becorit bars (3.59r

S.ll.R.E.bars (4.57ii

1 5f ; I

Shot- ' Trades- P/L .Officials Trades- Rippers Officials Stablemenfirers men • Teap : men ,F42 F444 F515 i E21 l Fi44 • F512 £21 F513

3 . 4 • 1

1.0(1) : 1.6(3) 1.2(10);

;. 0.9(2) 1.1 (1);

, • • :

•

1 ! . 1 . i 18 1 • 15

1.4(1) 1.4(24) . 1.0(2) •; 1.8 (19)

; 1.2(1) 1.1 (12) 0.6(1) 1.0(11)

! 0.8 (10) i 0.7 (15)

: :0.4(1) : 0.3(1) 0.7(5) i ; 1.6(7)

UO-(D ; 1.3(5)1.2(11)0.4(1)1 1.0(3) 1.1 (51) i 0.9(3): 1.3(52)- ; 0.50 * 0.28 ; - • 0.61 1.1 i 0.22 ; 0.88

1.2 (18)0,39 *

0.390.07

1 1.1 (57) i 1.3 (52)!.. 1.1 : 0.88

i 0.38 i 0.55

: 0.12 0.15

ii . •I TradesmenjI F445 i

1 ! ;

i 0.4(1)!

I • - i

i 0.4(1)

Notes:

| • • - '

!

1. Quartz concentrations on the face and in the return stable and return roadway were relativelyhigh although respirable concentrations were not noticeably so.

• . 1 •

*3.

'A.

( ) Number of Samples

CHART No. 1 East FACE

Shift Cxcie Avcraga• Output

per Shift Shale

Roof

(Blaes)4 CGS r/ith

. 100 ton Ironstone Nodules

FACE RETURN STABLE

Seam floor Average. .. . ___ Ventilation

QuantityClean Coal Seat earth , •

(fireclay) 2.60 nT/s

RETURN ROADWAY

Power Loaded Hand filled ; Hand filled . . .

112 kt/ disc shearer(bi-directional)

1.07n x 0.5Cn drumSpray clusters.. on shearer

'

: |

Gel ampoules

Doaty propsGut lick 6 leg chocks Becorit bars (2.59iii

S.H.R.E.bars(4.57in

4

Trades- P/L Officialsmen Team

F444 F515 E21

4 36 2

2.1(1) 3.4(40) .

1.9 (18) '

0.5(2) 1.5(23)

7.9(7) .0.4(1)

1.0(3) 2.9(88) 0.4(1)0.93 4.2

248 (92)4,13

1.240.56

Face Team

F526

32.2 (3)

3.1 *2.2 (3)

3.1

1.28

0.78

Stable-roen

F514

•15

7.5 (22)

5.6 (9)

4.2 (3)

18.3 (6)

8.4 (40)7.2

8.4?;2

5

Officials

.E21

1

5.2 (1)

5.2(1)-

(M)

3.912.10

Gel aospoules

3.66nt arches with0.46n stilts

7 ; 9

Shot- ;'i Rippers (Officialsfirers

F42 . F512 • j E21

3 18 1

. 6.5(29)

1.0(1) 3.0(13) 2.3. (1)

3.2 (19).

4.7 (6) .

1.0(1) 4.7(67)| 2.3(1)- 2.8

4.6(69)'2.77

1.680.63

Face Team

F526

40.9(1)

Trades- P/L Officialsmen Team

F444 F515 E21

1 2 ' 1

4.9 (4)

2.1 (2) 1.6 (2) | 2.3 (1)

4.6(1) 1.5(5)12.4(1)

4.0 (3) j 8.1 (1)

3.0 (3) 3.0 (14) 4.2 (3).1.8 3.0 3.3

3.2(20). 2.78

1.480.71

-

0.9 (1)

1

0.25

0.04

Temperature C

Dry . 25.6Wet 25.0D LJ 'Onr\.n»

.REMARKS

0

ControlPosition

8.9 (3)

2.8 (2)

7.5 (4)

9.7(1)

7.2 (10)4.8

3.702.07

FaceMean

3.3 +

FaceMean

1.3•

•

.

Notes:S.

6.

7.

8.

0 Standard Deviation •f Man-weighted Mean

.TABLE 1

TABLE 2

FACE SUMMARY

Seam N.C.B. Fsce Faco Type of Face length Ketght; Scam Corr. Coal Rank % Starting Finishing ' — "••••

Codu Code Carbon Data Data Single Unit1 7021"""" " • " " Longwall 188m 1.52m

Kailblades 24:871 '802 Juno 1970 Advancing

I SltO

Method of Workingi — • • ' ".' — ••• '" • '•" ••'"•- * — — -

Machine details

j Dust suppression

Supports

Sitei

Occupation(Filling Sh fts)

O.G.S.N.

Number of Men In Occupational Group

i. Mean Respirable 1st Quarter

Dust 2nd Quarter

1 Concentration 3rd Quarter

far Gotten 4th Quarter

! mg/m" Year

j Mean Samplo Concentration

'for Sito mg/m8

j Ash Concentration mg/m*

.Quartz Concentration mg/m*iJ (

Occupation(Preparation Shifts)

O.G.S.N.

Number of Men In Occupational Group

llsan'Rcspirable Dust Concentrationi

for Occupation mg/m8

Moan Samplo Concentration

for Sito mg/m8

Ash Concentration mg/m8

Quartz Concentration mg/m8

, INTAKE ROADWAY | INTAKE - STABLED . .FA .

Hand filled Hand filled Power—*"••*'•' * " - ••• • " — - • • — — ' — - — — — — "*i

Gel ampoules

3.66n arches

— ..»- — ~ W_._ !•' — -•-- . . . •

112 kU(bi-

•1.52m

Gel ampoules Spray

onDotvty props Dov/tyBecorit bars BecoritS.M.R.E. bars

0

Shotfirers

F42

2

2.0(1)

2.0(1)

Power Loader

1

RippersTeamF510

0

1.1 (4)

2.5 (3)

1.7(7)0.89 *

1.7(8)

0.83 •0.57

0.07

Power LoaderTeam N/S

F511

1.,.,..,.

0.9 (2)

-

0.9 (2)

-

0.29

0.02

F507

12

2.2 (7)

2.0 (4)

1.8 (1)

2.1 (12)0.71

2.1 (12)

0.710.720.11

1

Power LoaderTeam N/S

F511

2

0.8 (4)0.33 *

Shotfirors

F42

1

0.2 (1)

-

0.7 (5)0.39 *

0.21

0.01

3

Stablemen Power LoaderTeam

. F508

12

1.7 (5)

2.1 (4)

'1.8 (4)

1.8 (13)0.50

1.8 (13)

0.500.530.06

F510

44

2.8 (27)

2.7 (5)

1.8 (7)

2.6 (39)1.24

Pov/er LoaderTeam

F510

1

1.1 (2)-

Notes:1.

2.

j 3.

4.

( ) Number of Samples

CHART No. 5 PACE

SWftCycte Average Rsof Scara———————— Qatpgt — — — — ••• ' -.-—•— I I N ' . J I r •—

2 Filling ***** sink : Ufa «*i1 Prepe 400 ton (BUes) °'38m d1rt

r • - -

CE RETUFN STABLE

loaded Hand filled '

disc shearerdirectional)drum

clustersshearerpropsibars

*Power Loader

Team N/SF511

7

1.5 (3)

1.5 (3)U3

2.6 (42)1.27O.B/

0.11

Power LoaderTeam N/S

F511

40.9 (23)

0.44

0.9 (25)

0.44

0.28

0.02

Gal ampoules

Oowty propsBeccrit barsS.H.R.E. bars

5

Shotfirers Stablemen

F42 F509 •

2. 6

4,4 (1) 3.5 (6)

3.0(3)

3.4 (1)

4.4 (1) 3.3 (10)0.85

' 3.4 (11)0.87

1.120.12

Ftoo? Avcrasa— — — —— — Veasllatloft

• QusnSftySeat farth

(fireclay) 4<0 m3/s

RETURN ROAOHEAD

Hand filled'

<t ' . '

Gel ampoules

3,54oi arches

7

Rippers

F507

' 8U (16)

2J (2)

0.8 (2)

3.7 (20)•t.61 ,

3.7 (20)1.61

1.260.19 '

t

Temperature C

Dry 25.6Wa« 25.0R.H. ?% •

REMARKS

8

ControlPosition

6.4 (3)

2.2(1)

4.8(1)

5.3 (5)2.27

2.160.30

FaceMean

2.6,.

•

Face. Mean t

0.8 ;i

i-i• •

•

.'

Notes:S.

6.

7.

0.

TABLE 2

TABLE 3

FACE SUMMARY

Seam

v..Kailblades

Seam N.C.B. Face PaceCorr. Coal Rank % Starting FinishingCode Coda Carbon Date Date

24:871 702/802 Dec. 1971

Method of working

! Haching detailsiI

; Oust suppression•:— • ' • "". in T

( Supports

;

• Site

. Occupation! (Filling Shifts)1 O.G.S.N.

.' Number of Men In Occupational Group

Mean Respirable

j Oust

Concentration

for Occupation

mg/m*

! st Quarter

2nd Quarter

3rd Quarter

4th Quarter

Year

Mean Sample Concentration

• for Site

Ash Concentration; Quartz Concentration

mg/m°

mg/m8

mg/m8

- Occupation(Preparation ShifU)

} O.G.S.N. .

• Number of Men in Occupational Group

{ 1 1tan Respirable Dust Concentration

: .'or Occupation mg/m*

j Mean Sample Concentration

| for Site

j Ash Concentration

! )uartz Concentration

mg/m*

mg/m*

mg/m«

TypacfFaca Length Height

Single Unit1 Long wall 182.8m 1.37m

Advancing

INTAKE RIPPING FACE

(land filled • j Power loaded

Rotary dri 11j

•

Gel ampoules___»___—_-., ,

3.4ro x 2.1tn arches with 0.3m stilts

1

Rippers

F521

4

\

0.7(1)

0.7 (1)

0.7 (1)•

0.260.03

A.B. Ranging drumShearer. l,37m disc

Spray clusters on shearer... , —

Dowty Duke props2.6 Becorit bars

4

Power Loader Team

F524

23

3.0 (3)

1.8 (9)

2.1 (12), 0.95 *

2.1 (12)0.95 «

0.790.07

Power Loader Team N/S

F5257

0.9 (7)

0.66 *

0.9 (7)

0.66 *

0.26

0.02

Notes:I. The face was not always completely manned up, and as it started later in the year the cover of "volunteers*

was not complete,2;

3.

( ) Number of Samples

CHART No. 6 .FACE

Shift Cycle Average Roof Seam Floor Average————— Output .. . .1 . . .1 Ventilation

per Shift Quantity

Preparation 580 ^ CoaL Coal . . (fireclay) . 7.Cni3/s

RETURN STABLE

Bored., fired, hand filled

Rotary drill

Gel ampoules

Dov/ty Duke props2.6n Becorit bars4.7m S.M.R.E. bars

5

Stablemen

F523

6

RETURM RIPPING .

Bored, fired, hand filled

Rotary drill

Gel ampoules

•3.7m x 2.4m archeswith 0.3m stilts

7

Rippers

F521

6iI

_

3.6 (2)

3.6 (2)-

3.6 (2)-

1.080.12

3.2 (4)

5.0 (3)

4.0 (7)2.03

4.0 (7)2.03

1.420.15

RETURN ROADWAY

•

; \ • '

9

Power Loading Team

F524

1

5.2(1)

5.2(1)

5.2(1)'-

1.940.18

-

Temperature . C

Dry 20°CWet 19 CR.H. 952 ;

REMARKS 1

Homotropalventi lati on.

• i

e

ControlPosition

4.0(1)

4.0(1)-

„-

Face 'Moan

I

•

I

\

2.5, |i1

f1

i

Face 'Mean

.

0.9

"

*

Notes:S.

6. •

7.

8.

Standard Deviation •f- Men-weighted Mean

TABLE

TABLE 4

FACE SUMMARY

p1; Seam•V

j Kaltb Lades

•• Site-

Method of working• - - - • - I . .

Machine details

Oust suppression

Supports

Seam N.C.B. Face Face Type of Face Length HeightCbrr. Coal Rank % Starting FlnithingCode Code Carbon Date Data „. . .,

- .,.„, .,., Single unit

24:871 ^/802 " - Aug. 1971 Oct. 1971 jjJg^JJ 201ffl 1'5ffl

Sito

Occupation(Filling Shifts)

O.G.S.N.

Number of Men In Occupational Group

Mean Resplrable

Dust

i Concentration

for Occupation

mg/m8

1st Quarter

2nd Quarter

3rd Quarter

4th Quarter

Year

Mean Sample Concentration

for Site

I Ash Concentration

Quartz Concentration

Site

Occupation

mg/m1

mg/m8

mg/m'

'

(Preparation Shifts)O.G.S.N.

Number of Men in Occupational Group

Mean Rcspirablo Oust Concentration

for Occupation mg/m*

Mean Sample Concentration

for Site,

Ash Concentration

Quartz Concentration

Notes:I. This was

2.

3.

4.

mg/m"

mg/m*

mg/m"

INTAKE ROADWAY INTAKE STABLE

Hand filled . - Hand filledr

Gel ampoules Gel ampoules

3> x 2.1, arches iM W«4.6m S.M.R.E. bars

FACE

Power loaded

A.B. Shearer1.5m discSprays on disc

Oowty Duke props2.6m Becorit bars

It

Power Loader Team

F519 .

U

0.5 (1)

1.3 (2)

1.1 (3)0.49 «

1.1 (3)0.49 *0.50

0.10

.Face Team

F520

20.6 (4)

0.28 *

0.6 (4)

0.28 •

0.21

0.03

a spare face. The only samples taken was when men were temporarily transferred on to it.

.

( ) Number of Samples

CHART No. 12 FACC

Shift Cycki AverageOutputpar Shift

Filling - -230 ton

RETURN STABLE

Hand filled

Gel ampoules

Doffty Duke props2.6m Becorit bars

4.6m S.H.R.E. bars

5

Face Team

.F520

6

4.4 (1)

4.4 (1)

4.4(1)

1.580.25

Roof Seam Floor Averaco•• - - ' ' ••-- •! ui. Ventilation

Stain " 1.2m Coal Seat earth , , U3" X _____(Glaes) • 0.3ro Stono (fireclay) - 3/Coal . Mm s .

RETURN ROADWAY ' ,

Hand filled

Gel ampoules.

3.7m x 2.7n arches

7

Power Loader Tean

F519

1

3.5 (1)

3.5 (1)

3.5 (1)

1.650.34

Face Team

F520

i

2

0.8(1)

- .

0.8 (1)

0.27

0.04

i

t

Temperature C j

Dry 22.50Wet 22.5°R.H. 100$

REMARKS j. . • . i

Hcraotropalventilation.Site?Power loaderteam member looksafter stage loaderand face conveyorswitches.

0

Control

Position

7.3 (1)

7.3 (1)

4.260.69

Face-.Moan

2.2^

i

FaceMoan i

*

i0.7 .

i

Notes:

6.

7. !t

0. . .

• Standard Deviation Man-weighted Mean

TABLE *•

TABLE 5

FACE SUMMARY

Seam N.C.D. Face Faco Type of Faco Length HeightSeam Corr. Coal Rank % Starting Finishing " ' ~— — —

Code Code CarBcm Date Data Single unit

': -jny, ".' Long wall 157ra 1.17m; Splint 24:850 /u^802 March 1972 Advancing

j

j Method of working

j Machine detailsi

; Oust suppression

i

' Supportsr

i Sitet; Occupation

(Filling Shifts)O.G.S.N.

Ntirtiber of Men In Occupational Group

', Mean Respirabls 1st Quarter

Qust 2nd Quarter

Concentration 3rd Quarter

i ferOrrupitlon *h Quarter

mg/m* Year

j Mean S-imple Concentration

J for Sito mg/m*

• Ash Concentration mg/m°

Quarti Concentration mg/m°

' Site

! Occupation(Preparation Shifts)

O.G.S.N.

! Number of Men in Occupational Group

Mean Respirable Dust Concentration

for Occupation mg/m*

Mean Sample Concentration

f for Site mg/m°

i Ash Concentration • . mg/m*

I Quartz Concentration mg/m"

INTAKE RIPPING INTAKE STABLE

Hand filled ' . Hand filled

Gel ampoules • Gel ampoules

3.7m x 2.4m arches Dowfy Ouke;props

with 0.3n stilts and 0.9m stilts S S H ° R E bars

1 . 3

Rippers Face Team Stablemen

F527 F530 F528

12 2 8

0.8(1) 2.0(1) 2.6(2)

0.8 (1) 2.0 (1) 2.6 (2)

U (2) 2.6 (2)-

0.58 0.96

0.08 0.14

Notes:1. This face started only in the last month of the 1971 dust year.

• 2. .Respirable concentrations were higher than normally expected at this colliery.

1 3 .

•.

'• 4. ' •

( ) Number of Samples

CHART No. 2 FACE

Shift Cycle Average RoofOutput

Filling par Shift ShaL0

Filling ' ' (Blaes)Preparation 300 ton Coal

Seam Floor Average— Ventilation

Seat earth QuantityClean coal (fireclay) ' " ' ,'.

3.4arVs

FACE RETURN STABLE • • • 'RETURN RIPPING

Power loaded Hand filled

A.B. Ranging drum shearer1.1 7ra drum

Sprays on disc Go I ampoules

.,.t — .... ... „ — „...,. . ~. — ~—Hand filled

Gel ampoules

Gullick 6 leg chocks tarty Duke props 3.7G1 x 2.4m arches2.6m Becorlt bars with 0.91m and 0.30 stilts4.7m SJ'l.R.E, bars

' ; • 5 . ' .

Face Team Stablemen .

F530 F529

• 2 8 . . 8 '

1 •

7.9 (2) 8,

7.9 (2) 8.

1 (2)

1 (2)

7.9 (2) 8.1 (2)

3.21 2.67

0.39 0.37.

Face Team N/S

F531

12

. 0.6(1)

0.6(1)

—

Notes:5.

6.

7.

0.

Temperature C

Dry 2fjoWet 19°R.H. n

REMARKS

8

Control Faco

Position Mean

5.6 +

M

-

FaceMean

0.6

* Standard Deviation 4- Man-weighted Mean

TABLE 5

4.3 jSnylyonniental summary

Table 8 (at end of repox*t) gives the mean respirable dust concentrations forfacesy elsewhere underground and surface together vdth the correspondingconcentrations for the preceding two years. Compositional data are alsogiven for each face*

The Coalface mean respirable concentration was 2.8 mg/m^ compared with 2.9and 3.2 for 1970 and 1969 respectively,,

The quartz content of samples on l\Tce 1 Bast face i*as relatively high (over13 per cent) and gave a mean quartz concentration of 0044 mg/m^ for the face»

4.4 Relatlonshi-p between control point ajid face concentratiAns,

The mean respirable dust concentrations at the face control points (70m alongthe return road) are given in Tables 1-5 and from Table 8 it can be seen thatthe ratio of return road concentration to face concentration for coal-gettingoperations ranged from 1»38 to 3»29» with an overall colliery mean value of2o220 This ratio has risen steadily since 1968 (la25) and is much higherthan the 1,4 used by Jacobsen, Eae & Walton (1969) in the Interim Standards'Studye

4.5 Total,. dust measurements .

The measurement of "total dust concentration" continued as described byJohnston & Thomas (l972)e Total dust concentrations were derived from totalweight of dust (elutriator and filter) deposited in the gravimetric samplerand sample volumeSo When these observations are grouped by face site as inTable 9 » it can be seen that the ratio of total to respirable concentrationvaries from point to point along the faces, being generally higher at theintake end and lower towards the return roadway .

TABLE 9

Total Dust Concentrations

Face Location

Intake Roadway

Intake Ripping

Intake Stable

Face

Return Stable

Return Ripping

Control Point

Return Roadway

Mean

No, ofSamples

1

3

2

16

4

11

2

3

Mean Resp0Dust Conc0(mg/m^)

2.0

1.1

1.8

2.1

9.2

5.2

4.6

5.4

-

Mean TotalDust Conc«(mg/m2)

20.04

16056

17,16

14.66

34.45

26.26

19.58

22.21'

Total ConcoResp0 Cone.

9,97

14.64

9c66

7cOO

3.76

5 .07

4«24

4.13

6.6

On average, total dust concentrations are six to seven times respirableconcentrations.

• 5, BEOOMMEND4TIONS

1. Relatively high concentrations with high quartz contents were noted on theface, return stable and control point samples of Ko0.l East, Parrot, face*Management were notifiedo Dust conditions on this face should be kept undersurveillance.

2<> The ratio of return road to face concentration at this colliery hasapparently risen from 1.25 in 1968 to 2.22 in 1971* However, too few controlpoint samples were taken for the later figure to be regarded aa a confidentestimate. More control point, sampling is roccamendod0

REFERENCES

Harrison, G.Ee (1972/3). Analysis of gravimetric filters taken at LadyVictoria Colliery (.1971* Parts I and II), Institute of OccupationalMedicineo File No6 BP0 3100?o • .. . ' . .

Jacobsen, Mo, Rae, S» & Walton, W 0 H<> (l969)o The relationship between dustand pneumoconiosis as the basis of a gravimetric standard for airbornedust underground. N.CgB^ Report Non ISH/p(69)ll

. - «

Johnston, J.Y. (1972), Environmental condittona at Lady Victoria Colliery,1969, Institute of Occupational Medicine Report No0 TMA2/13

Johnston, J.Y» & Thomas, P« (l972)0 Environmental conditions at LadyVictoria Colliery, 1970» Institute of Occupational_Hedicine Report No. TMA2/23.

TABLE 8

Sumary of Dust Concentrations and Composition by Face and General Environnent for 1971

Class of Environment•

•

Sean Face.

Mean Resp. •: • < ,fust Cone, rag/a3 i Controlr

. - Face: . i ' . RvHn

! 1969 | '1970 i 1971. i .• .. i. ii1

I

Mechanised FillingSolint No. 2 i 5.6 i

SeantHean

Kailblades No. 5 .

i 5.6

!

No. -12

' Not 6

Sean Mean 3.2ii Parrot No. I East

. 1 ' - i_ j Seatn Mean

jPreparation i All SeaiiS

IDevelopment in Coal All Seass

iMEAN COALFACE L .

Ii

Stone Drifting f All Seansi

Elsewhere Underground . All Seass

3.2

2.2

3.2

U2

Ul

|4J3 2.6

2.2

i 2.5

3 9

2,6

U

1.4

2.9

2.5

2.4

3,3

3,3

0.9

2.2

2.8

0.9t

U2 ! 0.9

1.99

. 3.29

1.38

2.21

;| Surface : ! 0.4 . 0.4 004 •

• Mean. Cone,'• Ash Quart*

mg/n3 • mg/nr"

2.37 : 0.32!

2.37 ; 0.32i

0.84 ! 0.09i

1.03 ! 0.19

0.86 i 0.08

Compositional /)ata

Ash inSample

f

42.3

42,3 •

. " Composition of1 QUariz ; Kaolin'

% %

13.7

13.7 37.3i

32,3

47.0

34.5i

0.80 : 0.08:

1.36 ! 0.44

L56 1 0.44i

0^29 ! 0.03

0.87 i 0.12!

• UIO • 0.29LOl* ; 0.23+

0.39 I 0.04!

0.30 | 0.03i

IUO

18.4 JI

9.5 ii

33,0 10.8

41.1 32.7

41.1 32.7

32.6

39.4

U.6

13.7

34.2

21.4

25.1

22.21

39.2 26.733.0+ 23.0+

43.3 U.O'

32.8 i 10.8

0.12 : 0.01 ! 30.8 ; 6.0

25.225.4+

26.3

19.9

13.8

AshTiica

^

1 1.5

5.8

5.7

6.0

7.3

5.94.0+

3.5

6.2

5.3

Ca.Hg.Carb.

^

10.2

10.0

5.4

17.8

24.5

6.8

18.6

14.0

2L.O

IronCarb.

^

4.8

6.1

6.1

8.9

7.3

6.16.0+

6.7

7.6

7.9

+ Values for 1970

HEAD OFFICE:

Research Avenue North,Riccarton,Edinburgh, EH14 4AP, United KingdomTelephone: +44 (0)870 850 5131Facsimile: +44 (0)870 850 5132

Email: iom@iom-world.org

Tapton Park Innovation Centre,Brimington Road, Tapton,Chesterfield, Derbyshire, S41 0TZ, United KingdomTelephone: +44 (0)1246 557866Facsimile: +44 (0)1246 551212

Research House Business Centre,Fraser Road, Perivale, Middlesex, UB6 7AQ,United KingdomTelephone: +44 (0)208 537 3491/2Facsimile: +44 (0)208 537 3493

Brookside Business Park, Cold Meece, Stone, Staffs, ST15 0RZ,United KingdomTelephone: +44 (0)1785 764810Facsimile: +44 (0)1785 764811

(A20115) IOM (R) ReportCov art 3/15/06 12:32 PM Page 2