ASX Code: IPT 19th November 2024 CORPORATE RELEASE Maiden Measured Resource for the Lake Hope High Purity Alumina (HPA) Project, WA • A maiden Measured Resource of 730,000 tonnes at 25.8% alumina (Al2O3) for a contained 189,000 tonnes of alumina has been defined at the Lake Hope HPA Project in Western Australia. • The Measured Resource supports the first 15 years or more of proposed HPA production from Lake Hope. It will underpin a maiden Probable or Proven Reserve, subject to ongoing mining studies, test work, and economic studies to be completed as part of the Pre-Feasibility Study on Lake Hope. • Impact aims to bring Lake Hope into production to deliver low-cost, high-margin end products to a rapidly expanding global market. Current prices for benchmark 4N HPA (99.99% Al2O3) and related products are more than US$20,000 per tonne. • The Pre-Feasibility Study will be completed in Q1 2025 after the final reports from various contractors and consultants are received, which are expected in December and January. • Following an agreement with the Federal government, the first monies from the recent $2.87 million grant for the CRC-P research and development project with CPC Engineering and Edith Cowan University to construct a pilot plant for Lake Hope will be received by the end of November, a few months ahead of schedule. This will accelerate the construction of the pilot plant. Impact Minerals Limited (ASX:IPT) is pleased to announce a substantial and high-grade maiden Measured Resource estimate for its flagship Lake Hope High Purity Alumina (HPA) Project, located about 500 km east of Perth in Western Australia. Impact has the right to earn an 80% interest in Playa One Pty Ltd, owner of the Lake Hope project, via an incorporated joint venture by completing a PreFeasibility Study (PFS) currently in progress (Figure 1 and ASX Release 21st March 2023). Impact Minerals Limited Interactive Investor Hub Engage with us directly by asking questions, watching video summaries, and seeing what other shareholders have to say about this and past announcements at our Investor Hub https://investors.impactminerals.com.au/welcome ABN 52 119 062 261 61+ 8 6454 6666 info@impactminerals..com.au www.impactminerals.com.au The Measured Resource comprises 730,000 tonnes of lake clay at a grade of 25.8% alumina (aluminium oxide, Al2O3) for a contained 189,000 tonnes of alumina (Table A). It is part of a much larger resource that includes Indicated and Inferred Resources within a unique deposit of high-grade alumina hosted in extremely fine-grained evaporite and clay minerals in the top two metres of two small dry salt lakes in the Lake Hope playa system (West Lake and East Lake, Figure 3 and ASX Release March 21st 2023). The Measured Resource will underpin a maiden Probable or Proven Reserve Statement for an initial mine life of at least 15 years at the proposed benchmark production rate of 10,000 tonnes per annum of High Purity Alumina. The Reserve Statement is subject to further mining, metallurgical test work and economic studies that are part of the ongoing PFS (ASX Release October 9th 2024). The larger resource underpins a potentially much longer mine life of at least 25 years, as reported in the Scoping Study on Lake Hope. The study showed that the project had very robust economics, with an after-tax Net Present Value (NPV8) of A$1.3 billion and one of the lowest operating costs per tonne of HPA globally (ASX Release November 9th, 2023). Impact confirms that all material assumptions underpinning the production target and forecast financial information in the Scoping Study continue to apply. Figure 1. Location of Lake Hope Project E63/2086 The Mineral Resource estimate is shown in Table A and is reported in accordance with the requirements of the JORC Code 2012 by resource consultants H and S Consultants Pty Ltd (HSC) of Brisbane, Queensland. All details relevant to the Resource Estimate are given below and in the JORC Tables 1, 2 and 3 at the end of this report. Drill hole information and assay data have been reported previously (ASX Release 19th June 2023). ASX:IPT | ABN 52 119 062 261 2 Mineral Resources Category Measured Tonnes 730,000 Al2O3 % 25.8 Contained Al2O3 189,000 Indicated 1,880,000 25.0 471,000 Inferred 170,000 23.1 40,000 Total 2,780,000 25.1 700,000 Table A. Lake Hope Alumina Mineral Resources. About 60% of the Measured Resource lies within West Lake, over which Impact recently pegged a Mining Lease Application (ASX Release August 12th, 2024). When required, further low-cost push-tube sampling of the lake can significantly increase the size of the measured resource (Figure 2). Figure 2. Lake Hope showing the push tube sampling method used to drill out the resource and an example of the lake clay from the push tube showing excellent sample recovery. ASX:IPT | ABN 52 119 062 261 3 The alumina block grade distribution for the resources is shown in Figure 2. The grade increases towards the centre of the lakes, offering an opportunity for preferential mining of the higher-grade material in the early stages of any future mine development. Initial geometallurgical studies examining the variability of the mineral assemblages across the lakes have also been completed, and these are being incorporated into the mining schedules being prepared for the PFS. West Lake East Lake Figure 2. Percentage (%) Alumina Block Grade Distribution for the Lake Hope Mineral Resources (Drill hole collars are shown as circles.) The new Mineral Resource Estimate will be incorporated, as per the JORC 2012 Code, into the PreFeasibility Study for Lake Hope, which is nearing completion. Final reports from the engineering and design studies, mining schedules, and mining cost estimates, as well as from other contractors and consultants, are awaited. Some of these are expected in mid-December, and accordingly, the PFS is expected to be completed in Q1 2025. Early Access to the CRC-P Research and Development Grant Funding Impact recently announced that, in collaboration with CPC Engineering and the Mineral Recovery Research Centre (MRRC) at Edith Cowan University, it had been awarded a $2.87 million grant to commercialise its innovative process for producing High-Purity Alumina from Lake Hope (ASX Release October 22nd, 2024). The grant is provided under the Federal Government’s Cooperative Research Centres Projects (CRC-P) program and is part of a more extensive research and development project designed to provide Impact with the relevant information required to complete a Definitive Feasibility Study. A vital component of the grant funding will be to construct a pilot plant, which is an essential milestone for 2025, and this will provide consistent HPA samples for off-take and qualification trials. ASX:IPT | ABN 52 119 062 261 4 The federal government has agreed to an early start to the project, which will kick off with the first monies received before the end of November 2024, a few months ahead of schedule. This will further accelerate the entire research programme, and updates on this exciting project will be given as the project progresses. The research project brings together three groups with the unique assets and skills to bring the Lake Hope project to fruition. Impact has developed innovative metallurgical processes to produce HPA and fertiliser by-products from the salts in the Lake Hope deposit, which will be mined and trucked to Kwinana for processing. The mining and processing will have a minimal environmental footprint, with no on-site beneficiation required at the mine, nominal long-term rehabilitation requirements and one of the lowest Scope 1 and Scope 2 CO2 emissions of any HPA production process globally (ASX Release June 19th 2024). The Mineral Recovery Research Centre (MRRC) at ECU, led by Associate Professor Amir Razmjou, is a world leader in Membrane Selective Technology (MST) in which plastic or ceramic membranes are used to remove various contaminants from reagents and water. The technology is well-established in water treatment, and the MRRC is adapting the technology to the mining industry. Impact believes MST will be a further game-changer for producing HPA, particularly for cost-effective reagent regeneration and removal of contaminants in the wastewater. This, in turn, will lead to lower energy costs, emissions, and, in particular, operating costs for the project. It adds to the overall small environmental footprint of the Lake Hope project, and the research aims to design a “zero-liquid discharge” outcome to minimise or eliminate waste from the process. CPC Engineering is completing the engineering design studies and estimates of the operating and capital costs for the proposed 10,000-tonne-per-annum HPA plant as part of Impact’s Pre-Feasibility Study on Lake Hope (ASX Release October 9th, 2024). Eugenia Phegan of CPC has previous experience building HPA pilot plants and recognised the potential of MST for Lake Hope. CPC will design, build, and manage the pilot plant under the research project. Impact will also work with ECU and CPC to generate new uses for HPA. About the Lake Hope Resource Below is a summary of the material information used to estimate the resource, as ASX Listing Rule 5.8.1 requires. Further information is provided in the JORC Table, Sections 1, 2, and 3. All drill hole information and assay data used in the resource has been reported previously (ASX Release June 19 th 2023). Drilling Information The resource was defined by 340 short, vertical drill holes (for 320.55 metres) drilled on a nominal 100 metre by 100 metre grid with infill at 50 metres by 50 metres in places (Figure 2). The drilling consisted of 160 auger holes using a 70 mm screw hand-auger (for 193.55m) and 140 push tube holes hammered into the lake clays (for 106.44m). An additional 40 twin push tube holes for 20.56m were completed to provide additional QAQC information for the auger holes. Sample recovery was at least 95% and sample quality is considered good to excellent. All holes were visually logged at 5-10cm intervals for colour, mineralogy, grain size, moisture content and plasticity. ASX:IPT | ABN 52 119 062 261 5 Sampling and Sub-sampling Techniques Sampling was on a nominal 0.5m interval or by geological contacts, with the core cut by a knife or simply broken by hand. The samples contained little moisture with a consistency similar to hard plasticine. The entirety of all samples was sent for analysis at Intertek laboratories in Perth, WA where they were dried and coarse crushed to 1 mm diameter, with a 300 g split pulverised to 80% passing 75 microns to ensure sample homogenisation. Screening was deemed unnecessary as 100% of the sample particles are <100 microns as established by laser particle sizing (ASX Release 21st March 2023). All mineralised clay can be included in the metallurgical process without physical screening. Field duplicates for the auger drilling involved sampling one side of the screw thread (50% of the sample). For the push tube drilling, selected cores were cut in half (along the long core axis) with a knife to produce a field duplicate sample. Sample Analysis Method Samples were assayed for 16 elements using a lithium borate fusion and XRF quantification via the FB1/XRF10 or FB1/XRF30 method. Calculated oxide values included Al2O3 (alumina), CaO, Fe2O3, K2O, MnO2, Na2O, P2O5, SiO2, SO3 and TiO2 together with Loss on Ignition (LOI). X-Ray Diffraction analysis for mineralogical species was completed at Intertek Mineralogy with a variety of sulphate and clay ore minerals identified with lesser quartz and minor feldspar, mica and opaline silica. QAQC data was limited to nine standards and 15 field duplicate samples. Laboratory performance for standards was acceptable for most major elements, with Loss On Ignition and silica exceeding the published values slightly. Duplicates showed acceptable deviance for 13 of the 15 duplicates (+/- 10%). One auger hole from the East Lake was twinned with a push tube hole with acceptable agreement for the alumina grade. The QAQC programme included the use of sample weights for sample recovery for most auger holes. There is no relationship between alumina grade and sample recovery. Umpire lab checks for the analytical results are in progress. Database Data was collated by Impact from hardcopy logging sheets into Excel prior to validation and import into Impact’s DataShed database. The drilling data was supplied to H&SC as a series of CSV files for further validation in MSAccess and Surpac, which included manual checking of logging codes for consistency, plausibility of drill hole trajectories and assay grades. Geological Interpretation A 3D wireframe model was constructed from the drill hole data with north-south oriented cross sections produced every 50 metres for both the West Lake and East Lake. The mineralisation shows very good continuity and is flat-lying, extending from the surface to a depth of up to about 2 metres. The clays are underlain by weathered granite. ASX:IPT | ABN 52 119 062 261 6 A single mineral zone was defined for each the two deposits using a nominal basal Al2O3 cut-off grade of 20% and geological logging in conjunction with assays for SiO2, K2O, Fe2O3 and SO3. The boundaries of the mineralisation are well defined by drilling and by the lake edge as defined by satellite imagery. Dimensions for the two mineral zones are listed below and shown in plan view in Figure 2. o o West Lake: areal extent 1.6 km by 1.6 km with an average thickness from the sampling of 0.95 metres, maximum depth is 1.6m and a surface area of 1.33 million m2. East Lake: areal extent 1.6 km by 0.6 km with an average thickness from the sampling of 0.98 metres, maximum depth is 2.0m and a surface area of 0.76 million m2. Estimation Methodology HSC used the Ordinary Kriging estimation technique on drillhole composites loaded into a 3D block model. The mineral zone was treated as a hard boundary during the estimation process and composites were generated using the ‘best fit’ option in Surpac. A total of 251 and 212 composites, for West Lake and East Lake respectively, of nominal 0.5m length were used to estimate the contained Al2O3 for the mineralised lake clays. No top cuts were applied to the data due to an absence of extreme values and low coefficients of variation for the modelled element. 2D variography in the X (E-W) and Y (N-S) directions was performed for all composite data for both deposits. Grade continuity for alumina was reasonable for the West Lake and modest for the East Lake because of a zone of slightly lower grade in the middle of the lake. Grade interpolation used an expanding 3D search pass strategy with search parameters that accounted for the geometry of the mineralisation, the drill spacing and the Al2O3 variography. Modelling consisted of one set of three horizontal search passes. The minimum search used was 180 metres by 180 metres (X & Y) and 0.5m (Z) expanding to 360 metres by 360 metres by 1 metre. The minimum number of composite data points was 8 samples for Passes 1 and 2 decreasing to a minimum of 4 data for Pass 3. The maximum extrapolation of the estimates is 360 metres and the maximum number of composite data points is 20. Block dimensions are 50 metres by 50 metres in the X and Y directions with 0.75 metres in the Z direction. No sub-blocking was considered necessary with the Mineral Resources reported using a partial percent volume adjustment generated by the mineral wireframes. The X- and Y-axis dimensions were chosen based on the 100m spaced drilling, the Z dimension was a function of the composite data length. Block discretisation was set to 5 x 5 x 2 (X, Y and Z respectively). Metal grades were estimated in 3D using Ordinary Kriging (GS3M software) with the grades loaded into a Surpac mining software 3D block model for validation and resource reporting. No assumptions were made regarding the recovery of any by-products. No deleterious elements have been factored in. No production has taken place, so no reconciliation data is available. Tonnages are estimated on a dry weight basis. Moisture was determined by the laboratory using gravimetric methods to determine weight loss on drying the samples at 105oC for 12 hours. Both dry and wet density measurements were made from 141 samples. Dry density measurement was by the weight in air/weight in water method (Archimedes Principle) and wet density measurements by the was sealing method. The average wet density was 1.86t/m3 and the average dry density, used for reporting tonnages for the Mineral Resources was 1.37t/m3. ASX:IPT | ABN 52 119 062 261 7 The final block model was validated by H&SC using a variety of histograms, gridded seam models and summary statistics as well as a visual review. They concluded that the block model fairly represents the alumina grades observed in the drill holes. Classification Criteria Resource classification is based primarily on the drillhole spacing (and hence the data point density) with consideration of other factors such as grade continuity (the variography), the geological model, density data, sample recoveries and the improved QAQC data including hole twinning. It is also assumed that extraction will be bulk mining via an open pit method. These factors lead to the estimation results for Pass 1 being classed as Measured Resources and Passes 2 and 3 being classed as Indicated and Inferred Resources respectively. Cut-off Grades The reported Mineral Resources are constrained to the mineral wireframe with a partial percent volume adjustment for the block in contact with the wireframe. No cut-off grade was applied to the Mineral Resources, although the mineral wireframe had been designed to a nominal 20% Al2O3 cutoff. The lack of an actual cut-off grade at which the resource is quoted reflects an intended bulkmining approach of the entire wireframed extent of the mineralisation. Mining, Metallurgical and Environmental Assumptions It is envisaged that the deposit, which will be free-digging and require no crushing or screening, will be bulk mined in an open pit using a track mounted scraper or grader removing modest increments of material every 3 to 5 years. Track mounted trucks will be used to remove the mineralisation from mined areas to ROM stockpiles. The model block size (50 m by 50 m) is effectively the minimum mining dimension for this estimate. Any internal dilution has been factored in with the modelling and as such is appropriate to the block size. The raw lake clay will be transported to an offsite processing facility, likely to be an industrial yard in Kwinana. Processing will comprise a simple wash and filter circuit to recover the lake clays which will then be subject to low temperature leaching, crystallisation and purification. It is assumed that there will be no significant problems in generating a HPA product and no penalty elements have been identified thus far. The area lies within flat terrain with broad watercourses and dry bed lakes. The landscape also comprises sand dunes up to ~10m height, but with low relief. Vegetation comprises eucalyptus marri scrub to 12m height, heath, and scrub, with significant gum trees around the eastern dune areas, typical for that part of Western Australia. The groundwater in the lake is naturally hypersaline and acidic and the lake clay is a nett acid generating material. The intention is to line the ROM pads with an impermeable membrane such that all run off will be collected and returned to the lake surface. There are large flat areas available adjacent to the lake for ROM pad construction that have limited or no native vegetation. Baseline flora and fauna studies have been completed with no Threatened or Priority species identified. A Heritage survey by the Ngadju group over the surface of both West Lake and East Lake has been completed with no artefacts or ethnographic concerns identified. ASX:IPT | ABN 52 119 062 261 8 Reasonable Prospects for Eventual Economic Extraction Impact considers that work to date indicates that the Mineral Resource at Lake Hope has a reasonable prospect of eventual economic extraction (RPEEE). This includes: • • • • • • • Alumina of 99.99% purity (HPA) has been produced from the representative material via two different process routes (ASX Releases February 19th and February 27th 2024). The HPA produced meets available chemical purity specifications for a range of end uses and it is assumed that it may eventually be sold. No fatal deleterious elements have been identified within the mineralisation, mineral resource or HPA product. The proposed mining process is a low-risk, low cost free-dig, open pit truck and shovel operation. Initial economic modelling shows the proposed metallurgical processing and mining method could be profitable based on preliminary process modelling and various assumptions applicable to the data available. The Mineral Resource is of a sufficient size that the proposed mining rates are capable of being sustained for a sufficient length of time, potentially more than 20 years, to allow economic extraction. No impediment to extraction exists from cultural, heritage or environmental considerations. Insufficient technical and economic study work has been completed to define any ore reserves. About the Lake Hope Project The Lake Hope Project covers numerous prospective salt lakes between Hyden and Norseman in southern Western Australia, a Tier One jurisdiction (Figure 1). It comprises six granted exploration licences and two exploration licence applications covering the Lake Hope deposit already discovered (E63/2086) and seven other licences (EL63/2318, 63/2319, 63/2370, EL74/673, 74/779 and ELA63/2492 and ELA2493) which are poorly explored. In addition, applications for a Mining Lease (MLA63/684) and associated Miscellaneous Licence (L63/99) were recently lodged (ASX Release August 12th 2024). The tenements cover about 225 km2 and are all 100% owned by Playa One Pty Limited. Impact has the right to earn an interest in the company Playa One Pty Limited as follows (ASX Release 21st March 2023): 1. Upon completion of a PFS, Impact can enter an incorporated joint venture with the Playa One shareholders (through an entity representing them, Playa Two Pty Ltd). If so, it will acquire an immediate 80% interest in Playa One by issuing up to 120 million fully paid ordinary shares capped at a maximum value of $8 million (based on the 5-day VWAP before the election) to the Playa One Shareholders. 2. Upon completion of a Definitive Feasibility Study, which Impact will solely fund, Impact will issue up to 100 million fully paid ordinary shares to the Playa One shareholders, capped at a maximum value of $10 million (based on the 5-day VWAP before the ASX announcement of the completion of the DFS). 3. Playa One shareholders will be free-carried to a Decision to Mine. Impact will maintain all Playa One tenements in good standing during this time. ASX:IPT | ABN 52 119 062 261 9 4. If a Decision to Mine is made, the Playa One Shareholders may contribute to mine development costs or be diluted. If their interest falls below 7.5%, it will convert to a 2% net smelter royalty. Dr Michael G Jones Managing Director Competent persons statements The information in this report that relates to Exploration Results and metallurgical test work is based on, and fairly represents, information and supporting documentation prepared by Roland Gotthard, a consultant geologist to Impact Minerals Limited. Mr Gotthard is a Member of the Australasian Institute of Mining and Metallurgy, and he has sufficient experience which is relevant to the style of mineralisation and type of deposits under consideration and to the activity which has been undertaken to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves” (The JORC Code). Mr Gotthard consents to the inclusion in this release of the matters based on the information in the form and context in which they appear. The data in this report that relates to Mineral Resource estimates is based on information compiled by Mr Simon Tear who is a Member of The Australasian Institute of Mining and Metallurgy (MAusIMM) and who has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the “JORC Code”). Mr Tear is a Director of H&S Consultants Pty Ltd and he consents to the inclusion in the report of the Mineral Resource in the form and context in which they appear. Forward Looking Statements: This announcement contains ‘forward-looking information’ that is based on the Company’s expectations, estimates and projections as of the date on which the statements were made. This forward-looking information includes, among other things, statements with respect to the Company’s business strategy, plans, development, objectives, performance, outlook, growth, cash flow, projections, targets and expectations, mineral reserves and resources, results of exploration and related expenses. Generally, this forwardlooking information can be identified by the use of forward-looking terminology such as ‘outlook’, ‘anticipate’, ‘project’, ‘target’, ‘potential’, ‘likely’, ‘believe’, ‘estimate’, ‘expect’, ‘intend’, ‘may’, ‘would’, ‘could’, ‘should’, ‘scheduled’, ‘will’, ‘plan’, ‘forecast’, ‘evolve’ and similar expressions. Persons reading this announcement are cautioned that such statements are only predictions, and that the Company’s actual future results or performance may be materially different. Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause the Company’s actual results, level of activity, performance or achievements to be materially different from those expressed or implied by such forward-looking information. Impact Minerals Limited Interactive Investor Hub Engage with us directly by asking questions, watching video summaries, and seeing what other shareholders have to say about this and past announcements at our Investor Hub https://investors.impactminerals.com.au/welcome ASX:IPT | ABN 52 119 062 261 10 JORC Code, 2012 Edition – Table 1 Section 1 Sampling Techniques and Data Criteria JORC Code explanation Commentary Sampling techniques • Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. • Mineralisation comprises light brown to light grey, dense, plasticine-consistency salt • The salt is a nanometre sized colloidal precipitate of various sulphates including alunite, clays and silica • Sampling comprised two methods: hand auger drilling and push-tube drilling • Samples were generally of 0.5m in length (generally 3-4kg in weight) or under geological control, with the whole sample bagged in plastic bags sealed with cable ties. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • Sample preparation and analysis was completed at a commercial laboratory (Intertek WA) using industry standard practices. • • Aspects of the determination of mineralisation that are Material to the Public Report. Mineralisation comprises a flat-lying evaporitic lake sequence and is bound by the margins of the lake by sand dunes • Description of ‘industry standard’ work ASX:IPT | ABN 52 119 062 261 11 Drilling techniques • Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, facesampling bit or other type, whether core is oriented and if so, by what method, etc). • Auger drilling using a 70mm hand auger with spoon bit within dry clay horizons. • Auger samples recovered by removing cut salt clay from the drill bit • Push tube drilling using 55mm and 65mm PVC tubes hammered into salt. • Samples recovered from push tubes by hammering or cutting the salt interval out of the tube. • Core is unoriented • Drill hole summary Deposit Year Hole Type No of Holes Metres West Lake 2021 Auger 3 4.50 East Lake 2021 Auger 7 7.50 subtotal 10 12.00 Auger 4 4.78 Push Tube 49 32.71 subtotal 53 37.49 Auger 10 17.34 Push Tube 22 14.13 subtotal 32 31.47 Auger 81 97.65 Push Tube 29 23.12 subtotal 110 120.77 Auger 69 83.90 Push Tube 19 11.56 subtotal 88 95.46 West Lake East Lake West Lake East Lake 12 2022 2023 2023 West Lake 2024 Push Tube 45 22.36 East Lake 2024 Push Tube 2 1.00 Auger 88 106.93 West Lake ASX:IPT | ABN 52 119 062 261 2022 Criteria JORC Code explanation Commentary East Lake Drill sample recovery • Method of recording and assessing core and chip sample recoveries and results assessed. • Measures taken to maximise sample recovery and ensure representative nature of the samples. • Logging • • • Sub-sampling techniques and sample preparation • 123 78.19 subtotal 211 185.12 Auger 86 108.74 Push Tube 43 26.69 subtotal 129 135.43 Total 340 320.55 • Auger sample quality is considered good based on visual observation of salt consistency, moisture, and recovery. • Auger sample recovery was observed to be good to excellent with no wet samples. • Core recovery for Push tube sample is based on measurement of the