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NATIONAL. INSTITUTE FO R OCCUPATIONAL S A F E T Y A N D H E A L T H --- A L O S H 94 4 C H E S T N U T RIDGE RO AD
M O R G A N TO W N , W E S T VIRGINIA 26505
December 12, 1978
Mr. M. W. Glenn, Jr. P.O. Drawer F Chatsworth, GA 30705
Dear Mr. Glenn:
The preliminary evaluation of the environmental data collected as part of the industry-wide study of talc miners and millers has been completed.
The analysis of your Van Horn facility is included. This facility has been designated as plant number 11. This code number is unique to this facility and will appear on all summaries of data.
The respiratory dust samples were collected and analyzed according to NIOSH method SDS #29.02. This is listed in Table I.
The asbestos samples were collected and analyzed according to NIOSH method P and CAM #239. This is reported in Table II.
The crystalline silica samples were collected and analyzed according to NIOSH method P and CAM #109. This is reported in Table III.
The trace metal samples were collected and analyzed according to NIOSH method P and CAM #173. This is reported in Table IV.
The job classification codes for your facility are as follows:
JOB
Bagger Stacker Fork lift operator Mill operator Laborer Foreman Front end loader operator Maintenance Miner Crusher Welder
CLASSIFICATION CODES
1 2 A
5 6 7 9
10
18 29 30
PLAINTIFFS EXHIBIT
WCD-175
WCD 001606
Mr. Glenn December 12, "1978 Page 2
The arithmetic means of the respirable dust samples are given in Table V.
We-would like to thank you for your cooperation in this project. If you have any questions concerning these results please feel free to contact me at (304) 599-7421.
AG:sp Enclosure
Alice Greife
;
Environmental Investigations Branch
WCD 001607
Table 1
OBS
109 ll-J 111 112 113 11 ` 115 T16 117 118 : TT9 120 121 " T22 123 12 125 226 127 125 129
UK
113 113 113 11 116 115 116 116 115 116 116 116 116 116 116 116 116 206 206 126" 116
PLAMT=11
JOB WORKER
OUST
1 6 1 7
1 12
T78"2
1 17 1 0 .7 1
2 16
1 .6 1
ft 20 T T C 3
ft 25
1 .7 5
5 1 3 8 .3 9
6 5 5737
6 7 0 .92
6 9 0 .4 3
7 18
0.3 6
9 30
2 .9 2
10 11
2 .3
15 " 11
3743
10 15 * 3 . ft 1
10 21
0.8 7
15 22
1 .6 3
18. 23
0 11
18 2
0 .20
29 ' 8
1 .6 9
30 19
3c51
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Dust concentrations are expressed as rng/m^
WCD 001608
Plant 11
Table II (asbestos)
Less than 1% fibrous tremolite present.
Table III The bulk analysis of your talc revealed 2.5% free silica.
Iron 7
2
Manganese
L2
2
Table IV (ug/sample)
Arithmetic Mean
Calcium 227
Aluminum 13
Limit of Detection
25
Zinc 2
Nickle
L2
2
Table V (Arithmetic Means)
Job
X ( m g / m 3)
SD
H
1
4.67
5.24
3
2 1.61 -- 1
4 2.39 .91 2
5 38.39
--1
6 .57 .30 3
7 .36 -- 1
9 2.92 -- 1
10
2.34
1.12
5
18 .16 .05 2
29 1.69 -- 1
30 8.51 -- 1
X arithmetic mean SD " standard deviation S - number job classification
WCD 001609