Document QXdEmXn95dVQeN4RQ0jJdJ0r6
PLAINTIFFS EXHIBIT
CAM-350
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09151
Date:
2-Jun-09
To: From: Analyst(s): Copy:
J. Poston J. Pier C. Fleming, J. Sulik, A. Zamurs J. Kopp, R.Sorenson, A. Russell, S. Sharma, G. Hunter
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES JANUARY, 2009
Request:
Three samples, representing products of ore milled at Houston were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
PLAINTIFFS EXHIBIT
CAM-350
ITA-Ratcliff-000235
Table 1. Result Summary Sample Description
Grade 25 USP Composite
January 2009
A09151 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
A09151-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000236
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
January 2009
Sample No.
A09151-2
A09151 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
0.2457
0.2
10 47.3 0.020 0.13 0.013 0.09
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000237
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09153
Date:
2-Jun-09
To: From: Analyst(s): Copy:
J. Poston J. Pier C. Fleming, J. Sulik, A. Zamurs J. Kopp, R. Sorenson, A. Russell, S. Sharma, G. Hunter
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES FEBRUARY, 2009
Request:
Three samples, representing products of ore milled at Houston were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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-000238
Table 1. Result Summary Sample Description
Grade 25 USP Composite
February 2009
A09153 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
A09153-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000239
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
February 2009
Sample No.
A09153-2
A09153 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
0.2650
0.2
10 51.0 0.018 0.12 0.012 0.08
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000240
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09173
Date:
30-Jul-09
To: J. Poston
From:
Analyst(s): C. Fleming, J. Sulik, A. Zamurs
Copy:
J. Kopp, R. Sorenson, A. Russell, S. Sharma, G. Hunter
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES MARCH 2009
Request:
Three samples, representing products of ore milled at Houston, were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
Page 1 of 3
ITA-Ratcliff-000241
Table 1. Result Summary Sample Description
Grade 25 USP Composite
March 2009
m
A09173 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
A09173-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000242
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
m
March 2009
m
Sample No.
A09173 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
A09173-2
0.2120
0.2
10 40.8 0.023 0.15 0.015 0.10
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000243
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09219
Date:
27-Jul-09
To: J. Poston
From:
Analyst(s): C. Fleming, J. Sulik, A. Zamurs
Copy:
J. Kopp, R. Sorenson, A. Russell, S. Sharma, G. Hunter
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES APRIL 2009
Request:
Three samples, representing products of ore milled at Houston, were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
Page 1 of 3
ITA-Ratcliff-000244
Table 1. Result Summary Sample Description
Grade 25 USP Composite
April 2009
A09219 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
A09219-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000245
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
April 2009
Sample No.
A09219 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
A09219-2
0.2547
0.2
10 49.0 0.019 0.13 0.013 0.08
*Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000246
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09274
Date:
14-Aug-09
To: From: Analyst(s): Copy:
J. Poston
C. Fleming, A. Zamurs J. Kopp, R. Sorenson, A. Russell, S. Sharma, G. Hunter
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES MAY 2009
Request:
Three samples, representing products of ore milled at Houston, were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
Page 1 of 3
ITA-Ratcliff-000247
Table 1. Result Summary Sample Description
Grade 25 USP Composite
May 2009
A09274 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
11
A09274-3
0
0
BDL
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
11
00
BDL
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000248
Table 2. Analysis parameters Sample Description
Sample No.
A09274 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
Grade 25 USP Composite
May 2009
A09274-3
0.2641
0.2
10 50.9 0.018 0.12 0.012 0.08
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000249
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09308
Date:
19-Aug-09
To: From: Analyst(s): Copy:
J. Poston
C. Fleming, J. Sulik, A. Zamurs J. Kopp, R. Sorenson, A. Russell, S. Sharma, G. Hunter
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES JUNE 2009
Request:
Three samples, representing products of ore milled at Houston, were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
Page 1 of 3
ITA-Ratcliff-000250
Table 1. Result Summary Sample Description
Grade 25 USP Composite
June 2009
A09308 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
A09308-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000251
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
June 2009
Sample No.
A09308 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
A09308-2
0.2597
0.2
10 50.0 0.019 0.12 0.013 0.08
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000252
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09370
Date:
31-Aug-09
To: From: Analyst(s): Copy:
J. Poston
C. Fleming, J. Sulik, A. Zamurs J. Kopp, R. Sorenson, A. Russell, S. Sharma, G. Hunter
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES JULY 2009
Request:
Three samples, representing products of ore milled at Houston, were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
Page 1 of 3
ITA-Ratcliff-000253
Table 1. Result Summary Sample Description
Grade 25 USP Composite
July 2009
A09370 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
A09370-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000254
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
July 2009
Sample No.
A09370 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
A09370-2
0.2315
0.2
10 44.6 0.021 0.14 0.014 0.09
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000255
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09425
Date:
13-Dec-09
To: J. Poston
From:
Analyst(s): C. Fleming, J. Sulik
Copy:
A. Russell, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES AUGUST 2009
Request:
Three samples, representing products of ore milled at Houston, were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
Page 1 of 3
ITA-Ratcliff-000256
Table 1. Result Summary Sample Description
Grade 25 USP Composite
August 2009
A09425 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
A09425-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000257
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
August 2009
Sample No.
A09425 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
A09425-2
0.2800
0.2
10 53.9 0.017 0.11 0.012 0.08
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000258
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A09471
Date:
13-Dec-09
To: J. Poston
From:
Analyst(s): C. Fleming, J. Sulik
Copy:
A. Russell, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES SEPTEMBER 2009
Request:
Three samples, representing products of ore milled at Houston, were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of RTM's Fiber Management Framework Program.
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."
Page 1 of 3
ITA-Ratcliff-000259
A09471 TEM Analysis Results
Table 1. Result Summary
AMPHIBOLE
Sample Description
Sample No.
Number of Structures
Fiber Concentration
>5 um
1
<5 um
1
ppm
Grade 25 USP Composite
September 2009
A09471-2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um
1
<5 um
1
ppm
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000260
Table 2. Analysis parameters Sample Description
Sample No.
Grade 25 USP Composite
September 2009
A09471-2
A09471 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
0.2563
0.2
10 49.4 0.019 0.13 0.013 0.08
*Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000261