Document J3YNpQpJpBqpZbReQM3MYqEvr
PLAINTIFFS EXHIBIT
CAM-352
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
TECHNICAL REPORT
Project No. A10569
Date:
5-Jan-11
To: John Poston
From:
Andrew Zamurs
Analyst(s): C. Slowik, J. Sulik, A. Zamurs
Copy:
S. Sharma, J. Pier
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES OCTOBER 2010
Request:
Three samples, representing products 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-000298
Table 1. Result Summary Sample Description
Grade 25 USP Composite
October 2010
A10569 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
A 1 0 5 6 9 -2
0
0
BDL
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
00
BDL
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000299
Table 2. Analysis parameters Sample Description
Grade 25 USP Composite
October 2010
Sample No.
A 1 0 5 6 9 -2
A10569 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
0.2395
0.4
10 92.2 0.010 0.07 0.007 0.04
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000300
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. A10628
Date:
24-Jan-11
To: John Poston
From:
Carol Slowik
Analyst(s): C. Slowik, J. Sulik, A. Zamurs
Copy:
S. Sharma, J. Pier
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES NOVEMBER 2010
Request:
Four samples, representing products 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-000301
A10628 TEM Analysis Results
Table 1. Result Summary
AMPHIBOLE
Sample Description
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
Grade 25 USP Composite
m
November 2010
A 1 0 6 2 8 -2
1
0
1
0
BDL
m 11
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
00
BDL
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000302
Table 2. Analysis parameters Sample Description
Sample No.
Grade 25 USP Composite
m
November 2010
m
A 1 0 6 2 8 -2
A10628 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
0.2764
0.4
10
106.4
0.009
0.06
0.006
0.04
M
H
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000303
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. A10632
Date:
13-Jan-11
To: John Poston
From:
Carol Slowik
Analyst(s): C. Slowik, A. Zamurs
Copy:
S. Sharma, J. Pier
Title:
TEM ASBESTOS ANALYSIS OF HOSUTON PRODUCT SAMPLES SEPTEMBER 2010
Request:
Two samples, representing products 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-000304
A10632 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 2010
A 1 0 6 3 2 -2
0
0
BDL
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
00
BDL
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000305
Table 2. Analysis parameters Sample Description
Sample No.
Grade 25 USP Composite
September 2010
A 1 0 6 3 2 -2
A10632 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
0.2630
0.4
10
101.3
0.009
0.06
0.006
0.04
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000306
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. A11033
Date:
28-Jan-11
To: J. Poston
From:
J. Sulik
Analyst(s): C. Slowik, J. Sulik, A. Zamurs
Copy:
J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES DECEMBER 2010
Request:
Two samples, representing products of Chinese 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-000307
A11033 TEM Analysis Results
Table 1. Result Summary
AMPHIBOLE
Sample Description
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
Grade 25 USP Composite
December 2010
A 1 1 0 3 3 -2
0
0
BDL
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
00
BDL
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000308
Table 2. Analysis parameters Sample Description
Sample No.
Grade 25 USP Composite
m
December 2010
A 1 1 0 3 3 -2
A11033 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
0.2398
0.4
10 92.4 0.010 0.07 0.007 0.04
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000309
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. A11075
Date:
30-Mar-11
To: J. Poston
From:
Andrew Zamurs
Analyst(s): C. Slowik, J. Sulik, A. Zamurs
Copy:
M. Mellon, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES JANUARY 2011
Request:
Four samples, representing products of Chinese & Yellowstone 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-000310
Table 1. Result Summary Sample Description
m
A11075 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
Grade 25 USP JANUARY 2011 A 1 1075-2
0
0
BDL
m
11
H
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
00
BDL
11
11
BDL = Below detection limit, as defined by ASTM D 6620
ITA-Ratcliff-000311
Table 2. Analysis parameters
Sample Description
Sample No.
m
A11075 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
JANUARY 2011
m
A 1 1 0 7 5 -2
0.2417
0.4
10 93.1 0.010 0.07 0.007 0.04
M
H
M
*Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
ITA-Ratcliff-000312
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
CONFIDENTIAL
ORE ANALYSIS REPORT
Date: To: Reported by: Copy:
March, 3 rd 2011 I
Andrew Zamurs J. Poston, S. W ulf
Results:
The following composite ore sample, representing the MV Hosanger Gaungxi #2 shipment to Houston was analyzed by X-ray diffraction (XRD) for the presence of amphibole minerals and quartz. The sample was also analyzed by transmission electron microscopy (TEM) for the presence of asbestiform minerals. The requested tests are in partial fulfillment of specifications required by
Analytical Lab Code: Specification: Initial Ore Results - After Grinding (1B) 3.14 Percent Fibrous Amphibole (CTFA J4-1) Part A (X-ray Diffraction): Part B (Optical Microscopy):
Guangxi #2 Composite MV Hosagner A 1 1128-1
None detected Not required
3.15 Percent Free Crystalline Silica Quartz (CTFA Method J6-1) (X-Ray Diffraction)
<0.1% (Passes Test)
TEM Results - After Grinding (1C) 3.16 Asbestos by Transmission Electron Microscope (TM 7024)
None detected
ITA-Ratcliff-000313
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. A11135
Date:
5-Apr-11
To: From: Analyst(s): Copy:
John Poston Carol Slowik C. Slowik, J. Sulik, A. Zamurs M. Mellon, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES FEBRUARY 2011
Request:
Four samples, representing products 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-000314
Table_1'_Resul1
Sample Description
A11135 TEM Analysis Results
AMPHIBOLE Number
Sample No. of Structure >5 um <5 um
CHRYSOTILE
Number
Fiber
Concentration
of
Structure
ppm
>5 um <5 um
11
11
Asbestos Concentration
ppm
Grade 25 USP February 2011
A 1 1 1 3 5 -2
0
0
BDL
00
BDL
11
H
11
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000315
Table 2. Analysis parameters Sample Description
Sample No.
A11135 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 February 2011
A 1 1 1 3 5 -2
0.2749
0.4
10
105.9
0.009
0.06
0.006
0.04
H
H
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000316
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. A11198
Date:
18-May-11
To: From: Analyst(s): Copy:
J. Poston Andrew Zamurs C. Slowik, J. Sulik, A. Zamurs M. Mellon, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES MARCH 2011
Request:
Five samples, representing products of Chinese, Yellowstone, & Three Springs 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-000317
Table 1. Result Summary Sample Description
Grade 25 USP MARCH 2011
A11198 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
A 1 1 1 9 8 -2
0
0
BDL
11 11 11
H H H
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
00
BDL
11
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000318
Table 2. Analysis parameters Sample Description
Grade 25 USP MARCH 2011
Sample No.
A 1 1 1 9 8 -2
A11198 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
0.2330
0.4
10 89.7 0.010 0.07 0.007 0.05
H H
H H
M
H
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions. A Estimated weight of 0.25g used, re-prep not required because no structures were detected
Page 3 of 3
ITA-Ratcliff-000319
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. A11248
Date:
31-May-11
To: From: Analyst(s): Copy:
J. Poston Andrew Zamurs C. Slowik, J. Sulik, A. Zamurs M. Mellon, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES APRIL 2011
Request:
Four samples, representing products of Chinese, Yellowstone, & Three Springs 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-000320
Table 1. Result Summary Sample Description
Grade 25 USP APRIL 2011
m
A11248 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
A 1 1 2 4 8 -2
0
0
BDL
00
BDL
11
11
11
11
BDL = Below detection limit, as defined by ASTM D 6620 A Estimated weight of 0.25g used, re-prep not required because no structures were detected
Page 2 of 3
ITA-Ratcliff-000321
Table 2. Analysis parameters Sample Description
Grade 25 USP APRIL 2011
m
Sample No.
A11248 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
A 11248-2
0.2543
0.4
10 97.9 0.010 0.06 0.006 0.04
H H
*Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000322
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. A11304
Date:
27-Jun-11
To: J. Poston
From:
Andrew Zamurs
Analyst(s): C. Slowik, J. Sulik, A. Zamurs
Copy:
M. Mellon, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES MAY 2011
Request:
Four samples, representing products of Chinese, Yellowstone, & Three Springs 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-000323
Table 1. Result Summary Sample Description
Grade 25 USP
May 2011
A11304 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
A 1 1 3 0 4 -2
0
0
BDL
00
BDL
11
11
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000324
Table 2. Analysis parameters Sample Description
Grade 25 USP
May 2011
Sample No.
A11304 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
A 1 1 3 0 4 -2
0.2643
0.4
10
101.8
0.009
0.06
0.006
0.04
H
H
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000325
RIO TINTO
MINERALS
Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788
CONFIDENTIAL
ORE ANALYSIS REPORT
Date: To: Reported by: Copy:
June 23, 2011 I
Andrew Zamurs J. Poston, S. W ulf
Results:
The following composite ore sample, representing the MV Navios Star Gaungxi #2 shipment to Houston was analyzed by X-ray diffraction (XRD) for the presence of amphibole minerals and quartz. The sample was also analyzed by transmission electron microscopy (TEM) for the presence of asbestiform minerals. The requested tests are in partial fulfillment of specifications required by
Analytical Lab Code: Specification: Initial Ore Results - After Grinding (1B) 3.14 Percent Fibrous Amphibole (CTFA J4-1) Part A (X-ray Diffraction): Part B (Optical Microscopy):
Guangxi #2 Composite MV Navios Star A11307-2
None detec ted Not required
3.15 Percent Free Crystalline Silica Quartz (CTFA Method J6-1) (X-Ray Diffraction)
0.1% (Passes Test)
TEM Results - After Grinding (1C) 3.16 Asbestos by Transmission Electron Microscope (TM 7024)
None detected
ITA-Ratcliff-000326
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. A11361
Date:
28-Jul-11
To: J. Poston
From:
Andrew Zamurs
Analyst(s): C. Slowik, J. Sulik, A. Zamurs
Copy:
M. Mellon, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES JUNE 2011
Request:
Four samples, representing products of Chinese, Yellowstone, & Three Springs 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-000327
Table 1. Result Summary Sample Description
Grade 25 USP
June 2011
A11361 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
A 1 1 3 6 1 -2
0
0
BDL
00
BDL
11
11
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000328
Table 2. Analysis parameters Sample Description
Grade 25 USP
June 2011
Sample No.
A11361 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
A 1 1 3 6 1 -2
0.2661
0.4
10
102.5
0.009
0.06
0.006
0.04
H
M
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000329
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. A11392
Date:
16-Sep-11
To: J. Poston
From:
Andrew Zamurs
Analyst(s): C. Slowik, A. Zamurs
Copy:
G. Myers, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES JULY 2011
Request:
Four samples, representing products of Chinese, Yellowstone, & Three Springs 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-000330
Table 1. Result Summary Sample Description
Grade 25 USP
July 2011
A11392 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
A 1 1 3 9 2 -2
0
0
BDL
00
BDL
11
11
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000331
Table 2. Analysis parameters Sample Description
Grade 25 USP
July 2011
Sample No.
A11392 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
A 1 1 3 9 2 -2
0.2523
0.4
10 97.2 0.010 0.06 0.006 0.04
H
H
` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000332
IMERYS
Talc
Imerys Talc 1 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5770
TECHNICAL REPORT
Project No. A11426
Date:
26-Sep-11
To: From: Analyst(s): Copy:
John Poston Jennie Sulik C. Slowik, J. Sulik, A. Zamurs J. Pier, S. Sharma, G. Myers
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES AUGUST 2011
Request:
Three samples, representing products of Australian, Chinese #2, and Yellowstone 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-000333
Table 1. Result Summary Sample Description
Grade 25 USP August 2011
A11426 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
A 1 1 4 2 6 -2
0
0
BDL
00
BDL
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000334
Table 2. Analysis parameters Sample Description
Grade 25 USP August 2011
Sample No.
A11426 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
A 1 1 4 2 6 -2
0.2439
0.4
10 93.9 0.010 0.07 0.007 0.04
*Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000335
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. A11459
Date:
11-Nov-11
To: J. Poston
From:
Andrew Zamurs
Analyst(s): C. Slowik, J. Sulik, A. Zamurs
Copy:
G. Myers, J. Pier, S. Sharma
Title:
TEM ASBESTOS ANALYSIS OF HOUSTON PRODUCT SAMPLES SEPTEMBER 2011
Request:
Four samples, representing products of Chinese, Yellowstone, & Three Springs 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-000336
Table 1. Result Summary Sample Description
A11459 TEM Analysis Results
AMPHIBOLE
Sample No.
Number of Structures
Fiber Concentration
>5 um <5 um
ppm
11
Grade 25 USP September 2011 A 1 1459-2
0
0
BDL
11
H
11
CHRYSOTILE
Number of Structures
Asbestos Concentration
>5 um <5 um
ppm
11
00
BDL
11
11
BDL = Below detection limit, as defined by ASTM D 6620
Page 2 of 3
ITA-Ratcliff-000337
Table 2. Analysis parameters Sample Description
Grade 25 USP
July 2011
Sample No.
A11459 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
A 1 1 4 5 9 -2
0.2539
0.4
10 97.8 0.010 0.06 0.006 0.04
H
H
*Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions.
Page 3 of 3
ITA-Ratcliff-000338