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Rio Tinto Minerals 8051 E. Maplewood Ave Greenwood Village, CO 80111 (303) 713-5000 Fax: (303) 713-5788 TECHNICAL REPORT Project No. A11054 Date: 29-Jul-11 To: Desiree Giroux From: Carol Slowik Analyst(s): C. Slowik, J. Sulik, A. Zamurs Copy: R. Reilly, H. Bruning, J. Pier, S. Sharma, M. Khan Title: TEM ASBESTOS ANALYSIS OF ARGONAUT 2010 INFILL SAMPLES Request: Thirteen samples, representing drilling samples from Argonaut, 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-359 Page 1 of 3 ITA-Ratcliff-000871 Table 1. Result Summary Sample Description Sample No. VAA10-005-AB A11054-1 A11054 TEM Analysis Results AMPHIBOLE Number of Structures Fiber Concentration >5 um 0 <5 um 0 ppm BDL CHRYSOTILE Number of Structures Asbestos Concentration >5 um <5 um ppm 00 BDL VAA10-005-CD A 1 1 0 5 4 -2 0 0 BDL 00 BDL VAA10-006-AB A 1 1 0 5 4 -3 0 0 BDL 00 BDL VAA10-006-CD A 11054-4 0 0 BDL 00 BDL VAA10-007-AB A 1 1 0 5 4 -5 0 0 BDL 00 BDL VAA10-007-CD A 1 1 0 5 4 -6 0 0 BDL 00 BDL VAA10-008-AB A 1 1 0 5 4 -7 0 0 BDL 00 BDL VAA10-009-AB A 1 1 0 5 4 -8 0 0 BDL 00 BDL VAA10-009-CD A 1 1054-9 0 0 BDL 00 BDL VAA10-010-AB A 11054-10 0 0 BDL 00 BDL VAA10-010-CD A 11054-11 0 0 BDL 00 BDL VAA10-011-AB A 110 5 4 -1 2 0 0 BDL 00 BDL VAA10-011-CD A 11054-13 0 0 BDL 00 BDL BDL = Below detection limit, as defined by ASTM D 6620 Page 2 of 3 ITA-Ratcliff-000872 Table 2. Analysis parameters Sample Description Sample No. VAA10-005-AB A11054-1 Starting Weight g 0.2435 VAA10-005-CD A 1 1 0 5 4 -2 0.2799 VAA10-006-AB A 1 1054-3 0.2602 VAA10-006-CD A 11054-4 0.2770 VAA10-007-AB A 1 1 0 5 4 -5 0.2515 VAA10-007-CD A 1 1 0 5 4 -6 0.2899 VAA10-008-AB A 1 1 0 5 4 -7 0.2695 VAA10-009-AB A 1 1054-8 0.2227 VAA10-009-CD A 1 1054-9 0.2378 VAA10-010-AB A 110 5 4 -1 0 0.2381 VAA10-010-CD A 11054-11 0.2227 VAA10-011-AB A 1 1 0 5 4 -1 2 0.2442 VAA10-011-CD A 110 5 4 -1 3 0.2380 A11054 TEM Analysis Parameters Aliquot Filtered mL Grid Spaces Analyzed # Total Sample Analyzed ng AMPHIBOLE Analytical Detection Sensitivity* Limit ppm ppm CHRYSOTILE Analytical Detection Sensitivity* Limit ppm ppm 0.3 10 70.3 0.013 0.09 0.009 0.06 0.3 10 80.8 0.012 0.08 0.008 0.05 0.3 10 75.2 0.012 0.08 0.008 0.05 0.3 10 80.0 0.012 0.08 0.008 0.05 0.3 10 72.6 0.013 0.09 0.009 0.06 0.3 10 83.7 0.011 0.07 0.007 0.05 0.3 10 77.8 0.012 0.08 0.008 0.05 0.3 10 64.3 0.015 0.10 0.010 0.06 0.3 10 68.7 0.014 0.09 0.009 0.06 0.3 10 68.8 0.014 0.09 0.009 0.06 0.3 10 64.3 0.015 0.10 0.010 0.06 0.3 10 70.5 0.013 0.09 0.009 0.06 0.3 10 68.7 0.014 0.09 0.009 0.06 ` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions. Page 3 of 3 ITA-Ratcliff-000873 * IM E RYS Talc Imerys Talc * 2500 San Miguelito Road Lompoc, CA 93436 (805) 737-1212 Fax: (805) 737-1411 TECHNICAL REPORT Project No. A12008 Date: 13-Sep-12 To: From: Analyst(s): Copy: Desiree Giroux Carol Slowik C. Slowik J. Pier, S. Sharma, G. Myers, H. Bruning Title: TEM ASBESTOS ANALYSIS OF ARGONAUT 2011 INFILL COMPOSITED SAMPLES Request: Twenty-one samples of composited Argonaut infill samples were submitted to the Technical Center for asbestos analysis by transmission electron microscopy (TEM). This analysis is in partial fulfillment of Imerys' 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 5 ITA-Ratcliff-000874 Table 1. Result Summary Sample Description VAA11-004-AB VAA11-005-AB VAA11-005-C VAA11-006-AB VAA11-006-CD VAA11-009-A VAA11-010-AB VAA11-011 -A VAA11-013-AB VAA11-014-A VAA11-015-D VAA11-016-AB VAA11-016-CD VAA11-017-AB VAA11-017-CD VAA11-018-AB VAA11-018-CD VAA11-019-AB VAA11-019-CD A12008 TEM Analysis Results AMPHIBOLE Sample No. Number of Structures Fiber Concentration >5 um <5 um ppm A12008-1 0 0 BDL CHRYSOTILE Number of Structures Asbestos Concentration >5 um <5 um ppm 00 BDL A 1 2 0 0 8 -2 0 0 BDL 00 BDL A 1 2 0 0 8 -3 0 0 BDL 00 BDL A 1 2 0 0 8 -4 0 0 BDL 00 BDL A 1 2 0 0 8 -5 0 0 BDL 00 BDL A 1 2 0 0 8 -6 0 0 BDL 00 BDL A 1 2 0 0 8 -7 0 0 BDL 00 BDL A 1 2 0 0 8 -8 0 0 BDL 00 BDL A 1 2 0 0 8 -9 0 0 BDL 00 BDL A 1 2 0 0 8 -1 0 0 0 BDL 00 BDL A 1 2 0 0 8 -1 1 0 0 BDL 00 BDL A 1 2 0 0 8 -1 2 0 0 BDL 00 BDL A 1 2 0 0 8 -1 3 0 0 BDL 00 BDL A 1 2 0 0 8 -1 4 0 0 BDL 00 BDL A 1 2 0 0 8 -1 5 0 0 BDL 00 BDL A 1 2 0 0 8 -1 6 0 0 BDL 00 BDL A 1 2 0 0 8 -1 7 0 0 BDL 00 BDL A 1 2 0 0 8 -1 8 0 0 BDL 00 BDL A 1 2 0 0 8 -1 9 0 0 BDL 00 BDL Page 2 of 5 ITA-Ratcliff-000875 Table 1. Result Summary Sample Description VAA11-022-AB VAA11-022-C A12008 TEM Analysis Results AMPHIBOLE Sample No. Number of Structures Fiber Concentration >5 um <5 um ppm A 1 2 0 0 8 -2 0 0 0 BDL CHRYSOTILE Number of Structures Asbestos Concentration >5 um <5 um ppm 00 BDL A 1 2 0 0 8 -2 1 0 0 BDL 00 BDL BDL = Below detection limit, as defined by ASTM D 6620 Page 3 of 5 ITA-Ratcliff-000876 Table 2. Analysis parameters Sample Description VAA11-004-AB VAA11-005-AB VAA11-005-C VAA11-006-AB VAA11-006-CD VAA11-009-A VAA11-010-AB VAA11-011-A VAA11-013-AB VAA11-014-A VAA11-015-D VAA11-016-AB VAA11-016-CD VAA11-017-AB VAA11-017-CD VAA11-018-AB VAA11-018-CD VAA11-019-AB VAA11-019-CD Sample No. A12008-1 A12008 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 0.2511 0.3 10 72.5 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -2 0.2743 0.3 10 79.2 0.012 0.08 0.008 0.05 A 1 2 0 0 8 -3 0.2452 0.3 10 70.8 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -4 0.2625 0.3 10 75.8 0.012 0.08 0.008 0.05 A 1 2 0 0 8 -5 0.2702 0.3 10 78.0 0.012 0.08 0.008 0.05 A 1 2 0 0 8 -6 0.2738 0.3 10 79.1 0.012 0.08 0.008 0.05 A 1 2 0 0 8 -7 0.2341 0.3 10 67.6 0.014 0.09 0.009 0.06 A 1 2 0 0 8 -8 0.2643 0.3 10 76.3 0.012 0.08 0.008 0.05 A 1 2 0 0 8 -9 0.2639 0.3 10 76.2 0.012 0.08 0.008 0.05 A 1 2 0 0 8 -1 0 0.2516 0.3 10 72.7 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -1 1 0.2442 0.3 10 70.5 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -1 2 0.2592 0.3 10 74.9 0.013 0.08 0.008 0.06 A 1 2 0 0 8 -1 3 0.2449 0.3 10 70.7 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -1 4 0.2464 0.3 10 71.2 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -1 5 0.2433 0.3 10 70.3 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -1 6 0.2329 0.3 10 67.3 0.014 0.09 0.009 0.06 A 1 2 0 0 8 -1 7 0.2440 0.3 10 70.5 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -1 8 0.2433 0.3 10 70.3 0.013 0.09 0.009 0.06 A 1 2 0 0 8 -1 9 0.2543 0.3 10 73.5 0.013 0.08 0.009 0.06 Page 4 of 5 ITA-Ratcliff-000877 Table 2. Analysis parameters Sample Description VAA11-022-AB VAA11-022-C Sample No. A 1 2 0 0 8 -2 0 A12008 TEM Analysis Parameters Starting Weight g 0.2425 Aliquot Filtered mL 0.3 Grid Spaces Analyzed # 10 Total Sample Analyzed ng 70.0 AMPHIBOLE Analytical Detection Sensitivity* Limit ppm 0.013 ppm 0.09 CHRYSOTILE Analytical Detection Sensitivity* Limit ppm ppm 0.009 0.06 A 1 2 0 0 8 -2 1 0.2605 0.3 10 75.2 0.012 0.08 0.008 0.05 ` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions. Page 5 of 5 ITA-Ratcliff-000878 F&PA Global Research, Applications, and Technology Center 71 Daggett Drive San Jose, CA 95134 PFM.analytical@imerys.com TECHNICAL REPORT Project No. A13152 Date: 6-Dec-13 To: From: Desiree Giroux Julie Pier Analyst(s): R. Fishell, A. Knorpp, J. Pier Copy: S. Sharma Title: TEM ASBESTOS ANALYSIS OF 2013 ARGONAUT INFILL SAMPLES Request: Twelve samples of Argonaut ore from the 2013 infill drilling campaign were submitted to the Analytical Group for asbestos analysis by transmission electron microscopy (TEM). 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-000879 Table 1. Result Summary Sample Description Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite VAA13-01 VAA13-02 VAA13-03 VAA13-04 VAA13-05 VAA13-06 VAA13-07 VAA13-08 VAA13-09 VAA13-10 VAA13-11 VAA13-12 A13152 TEM Analysis Results AMPHIBOLE Sample No. Number of Structures Fiber Concentration >5 um <5 um ppm A 1 3 1 5 2 -1 0 0 BDL CHRYSOTILE Number of Structures Asbestos Concentration >5 um <5 um ppm 00 BDL A 1 3 1 5 2 -2 0 0 BDL 00 BDL A 1 3 1 5 2 -3 0 0 BDL 00 BDL A 1 3 1 5 2 -4 0 0 BDL 00 BDL A 1 3 1 5 2 -5 0 0 BDL 00 BDL A131526 0 0 BDL 00 BDL A 1 3 1 5 2 -7 0 0 BDL 00 BDL A 1 3 1 5 2 -8 0 0 BDL 01 BDL A 1 3 1 5 2 -9 0 0 BDL 00 BDL A 1 3 1 5 2 -1 0 0 0 BDL 00 BDL A 1 3 1 5 2 -1 1 0 0 BDL 00 BDL A 1 3 1 5 2 -1 2 0 0 BDL 00 BDL BDL = Below detection limit, as defined by ASTM D 6620 Page 2 of 3 ITA-Ratcliff-000880 Table 2. Analysis parameters Sample Description Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite Argonaut Infill Composite VAA13-01 VAA13-02 VAA13-03 VAA13-04 VAA13-05 VAA13-06 VAA13-07 VAA13-08 VAA13-09 VAA13-10 VAA13-11 VAA13-12 Sample No. A13152-1 A13152 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 0.2494 0.3 10 72.0 0.013 0.09 0.009 0.06 A 1 3 1 5 2 -2 0.2607 0.3 10 75.3 0.012 0.08 0.008 0.05 A 1 3 1 5 2 -3 0.2622 0.3 10 75.7 0.012 0.08 0.008 0.05 A 1 3 1 5 2 -4 0.2731 0.3 10 78.9 0.012 0.08 0.008 0.05 A 1 3 1 5 2 -5 0.2672 0.3 10 77.2 0.012 0.08 0.008 0.05 A 1 3 1 5 2 -6 0.2554 0.3 10 73.8 0.013 0.08 0.008 0.06 A 1 3 1 5 2 -7 0.2783 0.3 10 80.4 0.012 0.08 0.008 0.05 A 1 3 1 5 2 -8 0.2638 0.3 10 76.2 0.012 0.08 0.008 0.05 A 1 3 1 5 2 -9 0.2580 0.3 10 74.5 0.013 0.08 0.008 0.06 A 1 3 1 5 2 -1 0 0.2684 0.3 10 77.5 0.012 0.08 0.008 0.05 A 1 3 1 5 2 -1 1 0.2845 0.3 10 82.2 0.011 0.08 0.008 0.05 A 1 3 1 5 2 -1 2 0.2736 0.3 10 79.0 0.012 0.08 0.008 0.05 ` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions. Page 3 of 3 ITA-Ratcliff-000881 F&PA Global Research, Applications, and Technology Center 71 Daggett Drive San Jose, CA 95134 PFM.analytical@imerys.com TECHNICAL REPORT Project No. A15383 Date: 4-Jan-17 To: From: Desiree Giroux Julie Pier Analyst(s): A. Boxleiter, R. Fishell, J. Lee, K. Persaud, J. Pier Copy: S. Sharma, G. Myers Title: TEM ASBESTOS ANALYSIS OF 2015 ARGONAUT INFILL SAMPLES Request: Thirty-four samples of Argonaut ore from the 2015 infill drilling campaign were submitted to the Analytical Group for asbestos analysis by transmission electron microscopy (TEM). 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-000882 A15383 TEM Analysis Results Table 1. Result Summary AMPHIBOLE Sample Description Sample No. Number of Structures Fiber Concentration Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) VAA15-003-H VAA15-006-H VAA15-024-H VAA15-025-EF VAA15-025-GH VAA15-026-EF VAA15-026-GH VAA15-027-EF VAA15-027-G VAA15-029-H VAA15-031-AB VAA15-031-C VAA15-032-BC VAA15-032-DE VAA15-032-FG VAA15-033-BC VAA15-033-DE VAA15-033-FG VAA15-034-AB A 1 5 3 8 3 -1 A 1 5 3 8 3 -2 A 1 5 3 8 3 -3 A 1 5 3 8 3 -4 A 1 5 3 8 3 -5 A 1 5 3 8 3 -6 A 1 5 3 8 3 -7 A 1 5 3 8 3 -8 A 1 5 3 8 3 -9 A 1 5 3 8 3 -1 0 A 1 5 3 8 3 -1 1 A 1 5 3 8 3 -1 2 A 1 5 3 8 3 -1 3 A 1 5 3 8 3 -1 4 A 1 5 3 8 3 -1 5 A 1 5 3 8 3 -1 6 A 1 5 3 8 3 -1 7 A 1 5 3 8 3 -1 8 A 1 5 3 8 3 -1 9 >5 um 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 <5 um 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ppm BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL CHRYSOTILE Number of Structures Asbestos Concentration >5 um <5 um ppm 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL Page 2 of 5 ITA-Ratcliff-000883 A15383 TEM Analysis Results Table 1. Result Summary AMPHIBOLE Sample Description Sample No. Number of Structures Fiber Concentration Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) VAA15-034-CD VAA15-035-AB VAA15-035-CD VAA15-036-AB VAA15-036-BC VAA15-037-A VAA15-037-D VAA15-038-AB VAA15-038-CD VAA15-039-AB VAA15-039-CD VAA15-040-AB VAA15-040-CD VAA15-041-AB VAA15-041-CD A 1 5 3 8 3 -2 0 A 1 5 3 8 3 -2 1 A 1 5 3 8 3 -2 2 A 1 5 3 8 3 -2 3 A 1 5 3 8 3 -2 4 A 1 5 3 8 3 -2 5 A 1 5 3 8 3 -2 6 A 1 5 3 8 3 -2 7 A 1 5 3 8 3 -2 8 A 1 5 3 8 3 -2 9 A 1 5 3 8 3 -3 0 A 1 5 3 8 3 -3 1 A 1 5 3 8 3 -3 2 A 1 5 3 8 3 -3 3 A 1 5 3 8 3 -3 4 >5 um 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 <5 um 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ppm BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL CHRYSOTILE Number of Structures Asbestos Concentration >5 um <5 um ppm 00 BDL 00 BDL 01 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL 00 BDL BDL = Below detection limit, as defined by ASTM D 6620 Page 3 of 5 ITA-Ratcliff-000884 Table 2. Analysis parameters Sample Description Sample No. Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) VAA15-003-H VAA15-006-H VAA15-024-H VAA15-025-EF VAA15-025-GH VAA15-026-EF VAA15-026-GH VAA15-027-EF VAA15-027-G VAA15-029-H VAA15-031-AB VAA15-031-C VAA15-032-BC VAA15-032-DE VAA15-032-FG VAA15-033-BC VAA15-033-DE VAA15-033-FG VAA15-034-AB A15383-1 A 1 5 3 8 3 -2 A 1 5 3 8 3 -3 A 1 5 3 8 3 -4 A 1 5 3 8 3 -5 A 1 5 3 8 3 -6 A 1 5 3 8 3 -7 A 1 5 3 8 3 -8 A 1 5 3 8 3 -9 A 1 5 3 8 3 -1 0 A 1 5 3 8 3 -1 1 A 1 5 3 8 3 -1 2 A 1 5 3 8 3 -1 3 A 1 5 3 8 3 -1 4 A 1 5 3 8 3 -1 5 A 1 5 3 8 3 -1 6 A 1 5 3 8 3 -1 7 A 1 5 3 8 3 -1 8 A 1 5 3 8 3 -1 9 A15383 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 0.2480 0.5 5 59.7 0.016 0.10 0.010 0.07 0.2515 0.5 5 60.5 0.015 0.10 0.010 0.07 0.2574 0.5 5 62.0 0.015 0.10 0.010 0.07 0.2597 0.5 5 62.5 0.015 0.10 0.010 0.07 0.2598 0.5 5 62.5 0.015 0.10 0.010 0.07 0.2516 0.5 5 60.6 0.015 0.10 0.010 0.07 0.2470 0.5 5 59.5 0.016 0.10 0.011 0.07 0.2521 0.5 5 60.7 0.015 0.10 0.010 0.07 0.2531 0.5 5 60.9 0.015 0.10 0.010 0.07 0.2589 0.5 5 62.3 0.015 0.10 0.010 0.07 0.2586 0.5 5 62.2 0.015 0.10 0.010 0.07 0.2554 0.5 5 61.5 0.015 0.10 0.010 0.07 0.2511 0.5 5 60.4 0.016 0.10 0.010 0.07 0.2591 0.5 5 62.4 0.015 0.10 0.010 0.07 0.2445 0.5 5 58.9 0.016 0.11 0.011 0.07 0.2596 0.5 5 62.5 0.015 0.10 0.010 0.07 0.2577 0.5 5 62.0 0.015 0.10 0.010 0.07 0.2540 0.5 5 61.1 0.015 0.10 0.010 0.07 0.2365 0.5 5 56.9 0.016 0.11 0.011 0.07 Page 4 of 5 ITA-Ratcliff-000885 Table 2. Analysis parameters Sample Description Sample No. Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) Argonaut 2015 Infill (VAA15) VAA15-034-CD VAA15-035-AB VAA15-035-CD VAA15-036-AB VAA15-036-BC VAA15-037-A VAA15-037-D VAA15-038-AB VAA15-038-CD VAA15-039-AB VAA15-039-CD VAA15-040-AB VAA15-040-CD VAA15-041-AB VAA15-041-CD A 1 5 3 8 3 -2 0 A 1 5 3 8 3 -2 1 A 1 5 3 8 3 -2 2 A 1 5 3 8 3 -2 3 A 1 5 3 8 3 -2 4 A 1 5 3 8 3 -2 5 A 1 5 3 8 3 -2 6 A 1 5 3 8 3 -2 7 A 1 5 3 8 3 -2 8 A 1 5 3 8 3 -2 9 A 1 5 3 8 3 -3 0 A 1 5 3 8 3 -3 1 A 1 5 3 8 3 -3 2 A 1 5 3 8 3 -3 3 A 1 5 3 8 3 -3 4 A15383 TEM Analysis Parameters Starting Weight g 0.2460 Aliquot Filtered mL 0.5 Grid Spaces Analyzed # 5 Total Sample Analyzed ng 59.2 AMPHIBOLE Analytical Detection Sensitivity* Limit ppm 0.016 ppm 0.10 CHRYSOTILE Analytical Detection Sensitivity* Limit ppm ppm 0.011 0.07 0.2547 0.5 5 61.3 0.015 0.10 0.010 0.07 0.2524 0.5 5 60.8 0.015 0.10 0.010 0.07 0.2508 0.5 5 60.4 0.016 0.10 0.010 0.07 0.2431 0.5 5 58.5 0.016 0.11 0.011 0.07 0.2487 0.5 5 59.9 0.016 0.10 0.010 0.07 0.2497 0.5 5 60.1 0.016 0.10 0.010 0.07 0.2386 0.5 5 57.4 0.016 0.11 0.011 0.07 0.2467 0.5 5 59.4 0.016 0.10 0.011 0.07 0.2481 0.5 5 59.7 0.016 0.10 0.010 0.07 0.2443 0.5 5 58.8 0.016 0.11 0.011 0.07 0.2564 0.5 5 61.7 0.015 0.10 0.010 0.07 0.2517 0.5 5 60.6 0.015 0.10 0.010 0.07 0.2534 0.5 5 61.0 0.015 0.10 0.010 0.07 0.2565 0.5 5 61.7 0.015 0.10 0.010 0.07 ` Analytical Sensitivity is defined by ASTM D 5756 as the detection of one structure with minimum dimensions. Page 5 of 5 ITA-Ratcliff-000886