Document 6wkX0mkokebYDLKKbgkQ5oQJ9
PLAINTIFFS EXHIBIT
CAM-348
F&PA Global Research, Applications, and Technology Center 71 Daggett Drive San Jose, CA 95134 PFM.analytical@imerys.com
TECHNICAL REPORT
Project No. A02328
Title:
TEM ANALYSIS OF GUANGXI ORE SHIPMENT
Results:
The attached TEM results were obtained using the current ASTM draft method "Standard test method for indirect analysis of talc by transmission electron microscopy for asbestos mass concentration." This method is currently being developed by ASTM committee D22.07 (Sampling and Analysis of Asbestos) and is a modification of ASTM method D 5756 "Standard test method for microvacuum sampling and indirect analysis of dust by transmission electron microscopy for asbestos mass surface loading." The modification is to adapt existing methodology to the specific analysis of talc products and/or ore samples.
A program of laboratory "blank" analysis is in place and has been used to determine the detection limit for this analysis according to ASTM method D 6620, "Standard practice for asbestos detection limit based on counts."
ITA-Ratcliff-000198
Table 1. Result Summary
Sample Description
Guangxi #2 composite
May 2002
A02328 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Asbestos Concentration
A 0 2 3 2 8 -1
>5 um 0
<5 um 0
ppm BDL
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
00
BDL
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000199
Table 2. Analysis parameters
Sample Description
GcoumanpgMoxsi i.t.#e2
M.. ay3 2002
Sample No.
A02328-1
A02328 TEM Analysis Parameters
Starting Weight
g 0.0296
Aliquot Filtered
mL
1
Grid Spaces Analyzed
#
10
Total Sample Analyzed
ng
28.5
AMPHIBOLE
CHRYSOTILE
Analytical Detection Analytical Detection Sensitivity* Limit Sensitivity* Limit
ppm 0.033
ppm 0.156
ppm 0.022
ppm 0.104
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000200
F&PA Global Research, Applications, and Technology Center 71 Daggett Drive San Jose, CA 95134 PFM.analytical@imerys.com
TECHNICAL REPORT
Project No. A03026
Title:
TEM ANALYSIS OF GUANGXI ORE SHIPMENT
Results:
The attached TEM results were obtained using the current ASTM draft method "Standard test method for indirect analysis of talc by transmission electron microscopy for asbestos mass concentration." This method is currently being developed by ASTM committee D22.07 (Sampling and Analysis of Asbestos) and is a modification of ASTM method D 5756 "Standard test method for microvacuum sampling and indirect analysis of dust by transmission electron microscopy for asbestos mass surface loading." The modification is to adapt existing methodology to the specific analysis of talc products and/or ore samples.
A program of laboratory "blank" analysis is in place and has been used to determine the detection limit for this analysis according to ASTM method D 6620, "Standard practice for asbestos detection limit based on counts."
ITA-Ratcliff-000201
A03026 TEM Analysis Results
Table 1. Result Summary
AMPHIBOLE
Sample Description
Sample No.
Number of Structures
Fiber Concentration
Guangxi #2 composite
December 2002 (Houston)
A 0 3 0 2 6 -1
>5 um 0
<5 um 0
ppm BDL
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
00
BDL
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000202
Table 2. Analysis parameters
Sample Description
Sample No.
Guangxi #2 composite
December 2002 (Houston)
A03026-1
A03026 TEM Analysis Parameters
Starting Weight
g 0.0276
Aliquot Filtered
mL
1
Grid Spaces Analyzed
#
10
Total Sample Analyzed
ng
26.6
AMPHIBOLE
CHRYSOTILE
Analytical Detection Analytical Detection Sensitivity* Limit Sensitivity* Limit
ppm 0.035
ppm 0.167
ppm 0.024
ppm 0.112
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000203
F&PA Global Research, Applications, and Technology Center 71 Daggett Drive San Jose, CA 95134 PFM.analytical@imerys.com
TECHNICAL REPORT
Project No. A03199
Title:
TEM ANALYSIS OF GUANGXI ORE SHIPMENT
Results:
The attached TEM results were obtained using the current ASTM draft method "Standard test method for indirect analysis of talc by transmission electron microscopy for asbestos mass concentration." This method is currently being developed by ASTM committee D22.07 (Sampling and Analysis of Asbestos) and is a modification of ASTM method D 5756 "Standard test method for microvacuum sampling and indirect analysis of dust by transmission electron microscopy for asbestos mass surface loading." The modification is to adapt existing methodology to the specific analysis of talc products and/or ore samples.
A program of laboratory "blank" analysis is in place and has been used to determine the detection limit for this analysis according to ASTM method D 6620, "Standard practice for asbestos detection limit based on counts."
ITA-Ratcliff-000204
Table 1. Result Summary
Sample Description
Guangxi #2 composite
January 2003 (Houston)
A03199 TEM Analysis Results
Sample No.
AMPHIBOLE
Number of
Fiber
Structures
Concentration
>5 um <5 um
ppm
A 0 3 1 9 9 -1
0
1
0
1
BDL
H
CHRYSOTILE
Number of
Asbestos
Structures
Concentration
>5 um <5 um
ppm
00
11
BDL
H
BDL = Below detection limit, as defined by ASTM D 6620
Page 2
ITA-Ratcliff-000205
Table 2. Analysis parameters
Sample Description
Guangxi #2 composite
January 2003 (Houston)
Sample No.
A03199-1
A03199 TEM Analysis Parameters
Starting Weight
g
Aliquot Filtered
mL
Grid Spaces Analyzed
#
Total Sample Analyzed
ng
AMPHIBOLE
Analytical Detection Sensitivity* Limit
ppm
ppm
CHRYSOTILE
Analytical Detection Sensitivity* Limit
ppm
ppm
0.0205
1
10
19.7
0.047
0.225
0.032
0.150
1
li
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3
ITA-Ratcliff-000206
Table 1. Result Summary
Sample Description
Guangxi #2 composite
June 2003 (Houston)
A03369 TEM Analysis Results
Sample No.
AMPHIBOLE
Number of
Fiber
Structures
Concentration
>5 um <5 um
ppm
A 0 3 3 6 9 -1
0
0
BDL
CHRYSOTILE
Number of
Asbestos
Structures
Concentration
>5 um <5 um
ppm
00
BDL
BDL = Below detection limit, as defined by ASTM D 6620
Page 1 of 2
ITA-Ratcliff-000207
Table 2. Analysis parameters
Sample Description
Guangxi #2 composite
June 2003 (Houston)
Sample No.
A03369-1
A03369 TEM Analysis Parameters
Starting Weight
g 0.0237
Aliquot Filtered
mL
1
Grid Spaces Analyzed
#
10
Total Sample Analyzed
ng
22.8
AMPHIBOLE
CHRYSOTILE
Analytical Detection Analytical Detection Sensitivity* Limit Sensitivity* Limit
ppm 0.041
ppm 0.195
ppm 0.027
ppm 0.130
*Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 2 of 2
ITA-Ratcliff-000208