Appendix B - Geotech and Acid Sulfate report - MCU19-0030

Quality Control Results


                                                                                                                               Acceptance Pass Qualifying
                                Test                                       Units        Result 1                                 Limits   Limits Code
LCS - % Recovery
Chromium Suite
 Chromium Reducible Sulfur                                                   %             100                                   70-130    Pass
                                                             QA                                                                Acceptance Pass Qualifying
                   Test                   Lab Sample ID                    Units        Result 1
                                                            Source                                                               Limits   Limits Code
Duplicate
Chromium Suite                                                                          Result 1        Result 2        RPD
 pH-KCL                                   B18-No38683          CP       pH Units          4.8             4.8            <1       30%         Pass
 Acid trail - Titratable Actual Acidity   B18-No38683          CP       mol H+/t          8.6             8.8            2.0      30%         Pass
 sulfidic - TAA equiv. S% pyrite          B18-No38683          CP       % pyrite S       < 0.02          < 0.02          <1       30%         Pass
 Chromium Reducible Sulfur                B18-No38683          CP         %S             0.048           0.048           <1       30%         Pass
 Chromium Reducible Sulfur -acidity
 units                                    B18-No38683          CP        mol H+/t           30             30           <1        30%         Pass
 Sulfur - KCl Extractable                 B18-No38683          CP         %S                n/a            n/a          n/a       30%         Pass
 HCl Extractable Sulfur                   B18-No38683          CP         %S                n/a            n/a          n/a       30%         Pass
 Net Acid soluble sulfur                  B18-No38683          CP         %S                n/a            n/a          n/a       30%         Pass
 Net Acid soluble sulfur - acidity
 units                                    B18-No38683          CP        mol H+/t           n/a            n/a          n/a       30%         Pass
 Net Acid soluble sulfur - equivalent
 S% pyrite                                B18-No38683          CP        %S                 n/a            n/a          n/a       30%         Pass
 Acid Neutralising Capacity (ANCbt)       B18-No38683          CP       %CaCO3              n/a            n/a          n/a       30%         Pass
 Acid Neutralising Capacity -
 equivalent S% pyrite (s-ANCbt)           B18-No38683          CP           %S              n/a            n/a          n/a       30%         Pass
 ANC Fineness Factor                      B18-No38683          CP          factor           1.5            1.5          <1        30%         Pass
 CRS Suite - Net Acidity (Sulfur
 Units)                                   B18-No38683          CP           %S             0.05           0.05          n/a       30%         Pass
 CRS Suite - Net Acidity (Acidity
 Units)                                   B18-No38683          CP        mol H+/t           39             39           n/a       30%         Pass
 CRS Suite - Liming Rate                  B18-No38683          CP       kg CaCO3/t          2.9            2.9          <1        30%         Pass
Duplicate
                                                                                        Result 1        Result 2        RPD
% Moisture                                B18-No38685          CP            %            17              17             1.0      30%         Pass




                                                  Eurofins | mgt 1/21 Smallwood Place, Murarrie, QLD, Australia, 4172                                Page 8 of 9
  Date Reported: Dec 06, 2018                            ABN : 50 005 085 521 Telephone: +61 7 3902 4600                                Report Number: 630200-S