Mineral Resources for Dampier Project held by Kimberley Mineral Sands Pty Ltd (Sheffield interest - 50%) as at 30 June 2023 Dampier Project Mineral Resources1,2,3,4,5,6,7 Mineral Assemblage Deposit (cut-off) Mineral Resource Category Cut-off (THM%) Material Tonnes (millions) In-situ HM Tonnes7 (millions) HM Grade (%) Zircon (%) HiTi Leuc6 (%) Leuc (%) Ilmenite (%) Slimes (%) Oversize (%) Thunderbird4 (low-grade) Measured 3.0 510 45 8.9 8.0 2.3 2.2 27 18 12 Indicated 3.0 2,120 140 6.6 8.4 2.7 3.1 28 16 9 Inferred 3.0 600 38 6.3 8.4 2.6 3.2 28 15 8 Total 3.0 3,230 223 6.9 8.3 2.6 2.9 28 16 9 Night Train5 (low-grade) Inferred 1.2 130 4.2 3.3 14 5.4 46 22 8.7 2.2 Total 1.2 130 4.2 3.3 14 5.4 46 22 8.7 2.2 All Dampier (low-grade) Measured 3.0 510 45 8.9 8.0 2.3 2.2 27 18 12 Indicated 3.0 2,120 140 6.6 8.4 2.7 3.1 28 16 9 Inferred Various 730 42 5.8 8.9 2.9 7.5 27 13 7.2 Total Various 3,360 227 6.8 8.4 2.7 3.7 28 15 8.7 Thunderbird4 (high-grade) Measured 7.5 220 32 14.5 7.4 2.1 1.9 27 16 15 Indicated 7.5 640 76 11.8 7.6 2.4 2.1 28 14 11 Inferred 7.5 180 20 10.8 8.0 2.5 2.4 28 13 9 Total 7.5 1,050 127 12.2 7.6 2.3 2.1 27 15 11 Night Train5 (high-grade) Inferred 2.0 50 3.0 5.9 14 5.6 49 18 10 2.2 Total 2.0 50 3.0 5.9 14 5.6 49 18 10 2.2 All Dampier (high-grade) Measured 7.5 220 32 14.5 7.4 2.1 1.9 27 16 15 Indicated 7.5 640 76 11.8 7.6 2.4 2.1 28 14 11 Inferred Various 230 23 9.7 8.8 2.9 8.6 27 12 7.2 Total Various 1,090 130 11.9 7.8 2.4 3.2 27 14 11 Note 1: Night Train: The Mineral Resources estimate was prepared by Optiro Pty Ltd and first disclosed under the JORC Code (2012). Thunderbird: The Mineral Resource estimate was prepared by Optiro Pty Ltd and first disclosed under the JORC Code (2012). The Dampier Project Mineral Resources are reported inclusive of (not additional to) Ore Reserves. Note 2: HM is within the 38µm to 1mm size fraction and reported as a percentage of the total material, slimes is the -38µm fraction and oversize is the +1mm fraction. Note 3: Tonnes and grades have been rounded to reflect the relative accuracy and confidence level of the estimate, thus the sum of columns may not equal. Note 4: Thunderbird: Estimates of Mineral Assemblage are presented as percentages of the Heavy Mineral (HM) component of the deposit, as determined by magnetic separation, QEMSCANTM and XRF. Magnetic fractions were analysed by QEMSCANTM for mineral determination as follows: Ilmenite: 40-70% TiO2 >90% Liberation; Leucoxene: 70-94% TiO2 >90% Liberation; High Titanium Leucoxene (HiTi Leucoxene): >94% TiO2 >90% Liberation; and Zircon: 66.7% ZrO2+HfO2 >90% Liberation. The non-magnetic fraction was submitted for XRF analysis and minerals determined as follows: Zircon: ZrO2+HfO2/0.667 and High Titanium Leucoxene (HiTi Leucoxene): TiO2/0.94. Note 5: Night Train: Estimates of Mineral Assemblage are presented as percentages of the Heavy Mineral (HM) component of the deposit, as determined by magnetic separation, QEMSCANTM and XRF for one of 12 composite samples. Magnetic fractions were analysed by QEMSCANTM for mineral determination as follows: Ilmenite: 40-70% TiO 2 >90% Liberation; Leucoxene: 70-90% TiO2 >90% Liberation; High Titanium Leucoxene (HiTi Leucoxene) and Rutile 90% TiO2 >90% Liberation, and Zircon: 66.7% ZrO2+HfO2 >90% Liberation. The non-magnetic fraction was submitted for XRF analysis and minerals determined as follows: Zircon: ZrO2+HfO2/0.667 and High Titanium Leucoxene (HiTi Leucoxene): TiO2/0.94. HM assemblage determination- was by the QEMSCANTM process for 11 of 12 composite samples which uses observed mass and chemistry to classify particles according to their average chemistry, and then report mineral abundance by dominant % mass in particle. For the TiO2 minerals the following breakpoints were used to distinguish between Ilmenite 40% to 70% TiO2, Leucoxene 70% to 90% TiO2, High Titanium Leucoxene and Rutile > 90%, Screening of the heavy mineral was not required. Note 6: HiTi Leucoxene and Rutile (%) combined for Night Train at a >90% TiO2 (as one assemblage sample utilised=> 90% rutile and HiTi Leucoxene), HiTi Leucoxene for Thunderbird > 94% TiO2 Note 7: The contained in-situ HM tonnes were derived from the HM Grade and material tonnes in the Mineral Resource table. Ore Reserves and Mineral Resources continued 14 Sheffield Resources Limited Annual Report 2023
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