Announcement PDF ASX/Media Announcement 5 September 2023 High-Grade Mineralisation Intersected at Pearse North, Mineral Hill • • • • Five diamond drill holes have been completed over the proposed Pearse North open pit project area. Preliminary significant intersections (using a 1.0g/t Au cut off) include: o PNGT01 – 7.4m @ 2.91g/t Au and 27g/t Ag from 0.6m. o PNGT02 - 3.6m @ 4.90g/t Au and 70g/t Ag from 42.4m. o PNGT03 - 3.0m @ 6.03g/t and 54g/t Ag from 52.0m. o PNGT04 – 4.0m @ 3.35g/t Au and 90g/t Ag from 22.0m. o PNGT04 – 9.82m @ 2.46g/t Au and 18g/t Ag from 28.1m. These drill holes were primarily conducted to gather geotechnical data for pit wall designs. The results validate the existing resource model and enhance the level of confidence in the estimates' geometry and grade. Kingston Resources Limited (ASX: KSN) (Kingston or the Company) is pleased to report the completion of a geotechnical drilling program at Pearse North, with preliminary assays returning high-grade gold intercepts within the pit design shell. The primary purpose of the drilling was to collect additional geotechnical data to refine pit wall designs. Numerous significant intersections were returned, particularly for drillholes PNGT01 to PNGT04. Importantly, the results have confirmed the existing geological model over the area in terms of the shape and tenor of mineralisation. This has increased our confidence in the existing estimate and the current mine plan we have for Pearse North. Kingston Resources Managing Director, Andrew Corbett, said: “We are pleased with the results of the recent drill program at Pearse North. The high-grade mineralisation intersected in these holes validates the existing resource model and adds to our confidence in the potential of this project. The primary objective of these holes was to collect geotechnical data for open pit wall designs. However, the high-grade results are a welcome bonus and further support our plans to develop Pearse North as an open pit mine. We are excited about the potential of Pearse North and believe it can significantly contribute to our company's growth. We look forward to updating the market on our progress in due course.” ASX: KSN Shares on Issue: 497.9M Market Cap: A$42M Cash: A$18.2M (30 June 2023) 202/201 Miller Street, North Sydney, NSW 2060 +61 2 8021 7492 info@kingstonresources.com.au www.kingstonresources.com.au @KSNResources Figure 1: Pearse North geotechnical drill hole locations (blue) with 2022 drilling (bold black) and historical holes (grey). Cross sections of PNGT01 to PNGT04 are shown in Figure 2 through to Figure 4. Significant intersections support the current interpretation of mineralisation using both 0.3g/t and 1.0g/t cut-offs. Moreover, there are additional narrow, yet significant intercepts not included in the Resource model suggesting potential for a positive tonnage reconciliation during mining operations. Figure 2: PGNT01 and PGNT02 significant intersections (Section 21). 1 High grade domain shapes are sliced on section and drill holes are projected +/-12.5m. This may create apparent discrepancies between mineralised intercepts and domain shapes. www.kingstonresources.com.au 2 Figure 3: PGNT03 significant intersections (Section 32). Figure 4: PGNT04 significant intersections (Section 12). 2 High grade domain shapes are sliced on section and drill holes are projected +/-12.5m. This may create apparent discrepancies between mineralised intercepts and domain shapes. www.kingstonresources.com.au 3 The Pearse North resource area will be a new pit development, commencing in the first quarter of 2024. Table 1 and Table 2 present the Mineral Resource and Ore Reserve estimates for Pearse North. Pearse South is also included in the open pit mining inventory, and it will be mined with a cutback and deepening of the existing pit3. Both pits are high grade and forecast to contribute strongly to Kingston’s mine plan in terms of cash flow returns4. Table 1 Pearse North Mineral Resource Estimate at 1.0g/t Au Cut Off. Classification Indicated Inferred Total Tonnes kt 224 15 239 Grade Au g/t 3.0 2.5 3.0 Grade Ag g/t 25 21 25 Metal Au koz 22 1 23 Metal Ag koz 180 10 190 Table 2: Pearse North Probable Ore Reserve, March 2023. Classification Oxide Transition / Fresh Total Tonnes kt 10 110 120 Grade Au g/t 2.4 3.4 3.4 Grade Ag g/t 5 26 25 Metal Au koz 1 12 13 Metal Ag koz 1 94 95 Figure 5 Pearse North cross section looking north (mine grid, Section 2, 2200mN). Kingston Resources Chief Geologist, Stuart Hayward, said: “These drill results provide us with even greater confidence in the high-grade nature of the Pearse deposits. We take great pride in the high-quality technical work we have conducted to prepare Pearse for production. We are also eagerly anticipating further results from other geotechnical and resource extension holes recently completed over Mineral Hill.” Previous Pearse North drilling announcements: • Further shallow high grade drilling results at Pearse North, 28 July 2022. • Pearse North drilling confirms Resource extension potential, 14 June 2022 • Outstanding High-Grade Gold Hits at Pearse North, 8 April 2022 3 See ASX Announcement on 15 March 2023, Pearse Open Pit - Ore Reserve Update 4 See ASX announcement on 27 June 2023, $6.5M Capital Raising for Mineral Hill Production Expansion www.kingstonresources.com.au 4 Table 3: Pearse North geotechnical drill hole collar (datum: MGA94 Zone 55). Hole ID Hole Type Dip Total Depth GDA Azimuth MHG Azimuth GDA mE GDA mN AHD MHG mE MHG mN MHG mRL PNGT01 DDH -59.8 68 229.9 274.9 497064.8 6395749 331.36 54.1 2201.5 1331.4 PNGT02 DDH -59.4 66.2 60 105 497088.2 6395763 331.75 80.52 2194.76 1331.8 PNGT03 DDH -61.8 60.2 57.7 102.7 497082.7 6395804 334.29 106.2 2228.2 1334.4 PNGT04 DDH -60.2 60.2 237.1 282.1 497108.4 6395752 330.84 87.1 2172.9 1330.9 PNGT05 DDH -59.9 75.2 310.5 355.5 497061 6395804 334.98 90.8 2243.5 1335 329.8 Total Table 4: Pearse North geotechnical drillhole significant intercepts. Hole ID PNGT01 From 0.6 To 20 Interval (m) 19.4 Au (g/t) 1.6 Ag (g/t) 22 As (ppm) 1323 Sb (ppm) 331 Au g/t COG 0.1 PNGT01 0.6 19 including 18.4 1.68 23 1377 346 0.5 PNGT01 0.6 8 including 7.4 2.91 27 2525 602 1 PNGT01 11 13 and including 2 2.39 17 355 241 1 PNGT01 15 16 and including 1 1.26 31 36 171 1 PNGT01 18.8 19 and including 0.2 1.56 18 701 183 1 PNGT01 30.64 51 20.36 0.9 46 839 696 0.1 PNGT01 33 39.4 including 6.4 1.68 38 1151 1112 1 PNGT01 43 51 and including 8 0.81 80 225 381 0.5 PNGT01 43 47 and including 4 1.2 48 188 325 1 PNGT01 56.5 62.86 6.36 0.55 6 3752 346 0.1 PNGT01 57 58 including 1 1.94 1 7818 517 1 PNGT01 60 61 and including PNGT02 34 46 PNGT02 42.39 46 PNGT03 18 44 PNGT03 27 31.2 including PNGT03 27 30.5 including PNGT03 37 44 PNGT03 37 PNGT03 PNGT03 PNGT03 51.5 58 including PNGT03 52 55 and including PNGT04 22 38 PNGT04 22 26 including PNGT04 28.18 38 and including PNGT05 52 59 PNGT05 53 55 including PNGT05 53 54 and including PNGT05 68 74.5 1 0.56 8 2414 436 0.5 12 1.64 26 642 1344 0.1 3.61 4.9 70 1944 4179 1 26 0.42 1 539 356 0.1 4.2 0.8 0 247 145 0.5 3.5 0.82 0 244 122 1 and including 7 0.75 1 1474 1099 0.5 38 including 1 1.15 3 1412 290 1 42 43 and including 51.5 59 including 1 1.41 0 2427 426 1 7.5 1.17 14 1090 1302 0.1 6.5 1.32 15 1169 1323 0.5 3 6.03 54 5420 5122 1 16 2.37 18 2464 818 0.1 4 3.35 90 12573 8215 1 9.82 2.46 18 2855 1467 1 7 0.4 1 658 115 0.1 2 1.1 3 834 142 0.5 1 1.46 4 413 169 1 6.5 0.12 2 223 88 0.1 ** Mineralised intercepts include continuous zone of mineralisation with a maximum 2.0m internal waste, and 0.3m minimum sample length are calculated at 0.1, 0.5 and 1.0g/t Au cut off grades. *** Assays and mineralised intercepts are considered as Preliminary pending receipt of analysis from geotechnical samples up to 500mm axial length that are at times internal to the reported intercepts. Geotechnical samples are included within these intercepts as returning zero grade. Final assays will be reported later. www.kingstonresources.com.au 5 ABOUT KINGSTON RESOURCES Kingston Resources is currently producing gold from its Mineral Hill gold and copper mine in NSW and is developing the 3.8Moz Misima Gold Project in PNG. The Company’s objective is to establish itself as a midtier gold and base metals company with multiple producing assets. Mineral Hill Mine, NSW (100%) • • • • • Mine plan out to the end of 2027: Open pit and underground mining. Significant upside: Current life of mine only utilises 22% of the current 8.9Mt of Mineral Resources. Infrastructure excellence: Extensive existing infrastructure with all permits and approvals in place. Exploration potential: Exceptional upside within current Mining Leases (ML) and Exploration Licenses (EL). Current Focus: Maximising returns from Tailings Project gold production, proactive exploration drilling, and underground re-entry. Misima Gold Project, PNG (100%) • • • • • DFS Validation: potential for a robust, scalable, and low-cost open pit operation. Production Potential: Anticipated gold production of ~2.4Moz over a 20-Year Mine Life (Avg. 128kozpa). Strong Financial Viability: Pre-Tax Net Present Value (NPV) of A$956 Million (based on a US$1,800/oz Gold Price). Gold Price Upside: Highly leveraged to the upside of the gold price, amplifying potential returns. Current Focus: Prioritising ESIA reports, strategic funding & development strategies. Mineral Hill is a gold and copper mine located in the Cobar Basin of NSW. In June 2023, the company updated its life of mine plan, including both open pit and underground mining until 2027. The processing plant currently operates a CIL, and work is underway to recommission the existing crushing, grinding and flotation circuits for copper, lead and zinc concentrate production. In addition to current production, the company is focused on meeting near mine production targets located on the existing MLs. The aim is to extend the mine’s life through organic growth and consider regional deposits that could be processed at Mineral Hill’s processing plant. Misima hosts a JORC Resource of 3.8Moz Au and an Ore Reserve of 1.73Moz. Placer Pacific operated Misima as a profitable open pit mine between 1989 and 2001, producing over 3.7Moz before it was closed when the gold price was below US$300/oz. The Misima Project also offers great potential for additional resource growth through exploration success targeting extensions and additions to the current Resource base. For further information regarding the Misima Mineral Resource and Ore Reserve estimate, see ASX announcements on 24 November 2020 and 15 September 2021 and 6 June 2022. Further information is included within the original announcements. The Mineral Hill Mineral Resource estimate outlined below was released in ASX announcements on 18 November 2021 (TSF), 15 March 2023 (Pearse South and Pearse North), 24 November 2022 (Southern Ore Zone), 21 March 2023 (Jack’s Hut) and 13 September 2011(Parkers Hill by KBL). The Ore Reserve estimate outlined below was released in ASX announcements on 18 November 2021 (TSF), 15 March 2023 (Pearse South and Pearse North). Further information is included within the original announcements. www.kingstonresources.com.au 6 This release has been authorised by the Kingston Resources Limited Board. For all enquiries, please contact Managing Director, Andrew Corbett, on +61 2 8021 7492. MINERAL RESOURCES AND ORE RESERVES Misima JORC 2012 Mineral Resource & Ore Reserve summary table Resource Category Cut-off (g/t Au) Tonnes (Mt) Gold Grade (g/t Au) Silver Grade (g/t Ag) Au (Moz) Ag (Moz) Indicated 0.3 97.7 0.79 4.3 2.5 13.4 Inferred 0.3 71.3 0.59 3.8 1.4 8.7 Total 0.3 169 0.71 4.1 3.8 22.1 Reserve Cut-off (g/t Au) Tonnes (Mt) Gold Grade (g/t Au) Silver Grade (g/t Ag) Au (Moz) Ag (Moz) Probable 0.3 75.6 0.79 4.2 1.73 4.1 Mineral Hill JORC 2012 & JORC 2004 Mineral Resource & Ore Reserve summary table Resource Category Measured Tonnes (kt) 228 Gold Grade (g/t) 2.11 Silver Grade (g/t) 11 Cu % 1.3% Pb % 0.5% Zn % 0.3% Au (koz) 15 Ag (koz) 80 Cu (kt) 3 Pb (kt) 1.2 Zn (kt) 0.7 Indicated 5,582 1.06 28 1.2% 1.7% 1.1% 191 4,244 47 70 42 Inferred 3,091 1.17 23 0.7% 1.4% 1.2% 116 2,242 22 42 38 Total 8,901 1.13 26 1.0% 1.6% 1.1% 323 6,566 72 113 81 Reserve Category Proved Tonnes (kt) - Gold Grade (g/t) 0.00 Silver Grade (g/t) 0 Cu % Pb % Zn % Au (koz) - Ag (koz) 0 Cu (kt) Pb (kt) Zn (kt) Probable 1,431 1.55 57 71 470 Total 1,431 1.55 57 71 470 Competent Persons Statement and Disclaimer The information in this report that relates to Exploration Results and Mineral Resources is based on information compiled by Mr. Stuart Hayward BAppSc (Geology) MAIG, a Competent Person who is a member of the Australian Institute of Geoscientists. Mr. Hayward is an employee of the Company. Mr. Hayward has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being 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”. Mr. Hayward confirms that the information in the market announcement provided is an accurate representation of the available data and studies for the material mining project and consents to the inclusion in this report of the matters based upon the information in the form and context in which it appears. The Competent Person signing off on the overall Misima Ore Reserves Estimate is Mr John Wyche BE (Min Hon), of Australian Mine Design and Development Pty Ltd, who is a Fellow of the Australasian Institute of Mining and Metallurgy and who has sufficient relevant experience in operations and consulting for open pit metalliferous mines. Mr Wyche consents to the inclusion in this report of the information pertaining to the Misima Ore Reserve in the form and context in which it appears. The Competent Person signing off on the overall Pearse Opencut Ore Reserves Estimate is Mr John Wyche BE (Min Hon), of Australian Mine Design and Development Pty Ltd, who is a Fellow of the Australasian Institute of Mining and Metallurgy and who has sufficient relevant experience in operations and consulting for open pit metalliferous mines. Mr Wyche consents to the inclusion in this report of the information pertaining to the Pearse Opencut Ore Reserve in the form and context in which it appears. www.kingstonresources.com.au 7 JORC CODE 2012 EDITION, TABLE 1 Section 1 Sampling Techniques and Data (Criteria in this section apply to all succeeding sections.) Criteria JORC Code explanation Sampling techniques www.kingstonresources.com.au • Nature and quality of sampling (eg 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. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • Aspects of the determination of mineralisation that are Material to the Public Report. • In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. Commentary Reverse Circulation Drilling Sample Collection • Samples were collected directly from an RC drill rig using a cone splitter and a 1m downhole interval. A 1/8 split of each interval was collected in a prenumbered calico bag. The remaining sample was collected in a green plastic bag and placed on the ground in numeric downhole sequence for geological logging. • Cone splitter setup was verified at each hole to be vertical and clean. The RC sample circuit is blown clean at each metre during drilling. • Samples in calico bags were collected and dispatched to SGS laboratory where they are received and registered with a sample receipt document provided as a record of the chain of custody process. Diamond Drilling Sample Collection • A diamond core drill rig was used to produce rock samples of core. Run length was variable between 3m and 1m depending on the ground conditions and any expected mineralization. • Triple Tube PQ and HQ barrel set up was utilized to maximize recoveries. PQ was used in weathered zone, typically approximately the first 30m followed by HQ3. • Mineralization is typically determined by the presence of sulphides, namely pyrite, and alteration mineralogy. This is a visual assessment and at times verified by pXRF analysis. • Diamond drill core is orientated where orientation tools provided an outcome that is assessed as reliable. • The geologist selects sample intervals based on logged lithology, alteration, mineralisation and structures with a minimum sample length of 0.3m and a maximum of 1.0m. Drill core is sampled only within potentially mineralised zones and extending up to 10m outside of mineralised zones as determined by visual and/or pXRF analysis. • All drill core is sampled using an automated/mechanical core cutting machine with diamond cutting blade. Samples comprise half core for HQ3, and quarter core for PQ3 with sample intervals determined by the geologist and recorded as a cut sheet. • For orientated drill core a cutting refence line is drawn approximately 15mm 8 Criteria JORC Code explanation Drilling techniques • Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc). 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. • Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. www.kingstonresources.com.au Commentary offset form the orientation line. Drill core is cut along the cut line with the orientation line not sampled and returned to the core box for future reference. • Non-orientated drill core is cut along a reference line that is the best approximation of the extensions of the orientation reference line with the intent of ensuring the same half core is sampled. • Samples are placing calico bags and dispatched to SGS laboratory where they are received and registered with a sample receipt document provided as a record of the chain of custody process. Analysis of Geotechnical Samples • Multiple whole core samples were collected and dispatched for laboratory based geotechnical and material properties testing and analysis. • Sample intervals were a maximum 0.5m length along the core axis. • Samples were returned to the core yard where tested/destructed samples were submitted in their entirety for crushing and splitting to ensure a representative sample for geochemical analysis. • Partially destructed samples that can be pieced back together, and non tested samples were cut using the auto core saw and half submitted for analysis in a manner consistent with drill core sampling procedures. • Diamond Core Drilling: - Triple tube diamond core, PQ3 collar followed by HQ3 tail. Where possible core was oriented using a Reflex down hole digital orientation tool. • Reverse Circulation Drilling:- Historical and recent RC drilling using 5.5 inch downhole hammer and face sampling bit; • • Diamond Drill Core • Diamond drill core is recovered on a run-by-run basis where the length drilled and axial length recovered is recorded by the drilling crew. Run length and recovery are remeasured and calculated in the core processing area. • Reverse Circulation Drilling • RC samples are recovered at 1 metre downhole interval via a cyclone attached to the side of the drill rig. Analytical samples are split from the cyclone feed directly to a calico sample bag using a rotary cone splitter. The remainder of the bulk is placed in a plastic bag and placed in an orderly manner to allow identification of intervals and potential resampling later. • Sample volume is maximised during drilling by ensuring the drill hole is only advanced when the air/material flow is dry, and a slight pause at the end of 9 Criteria JORC Code explanation Commentary • • • Logging • Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. • Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. • The total length and percentage of the relevant intersections logged. • • • • • • Sub-sampling techniques and sample preparation www.kingstonresources.com.au • If core, whether cut or sawn and whether quarter, half or all core taken. • If non-core, whether riffled, tube sampled, rotary split, • • each meter to allow material to clear the anulus and inner tubes. Sample quality was monitored by the onsite geologist and recovery noted. Sampling methodology for the duration of the program was consistent. Overall high drill sample recoveries and consistent sample weights limit the potential to introduce sample bias. • A qualified geologist and engineering geologist logs all drill core from this program. Historical and KSN DDH and RC holes were logged by a qualified geologist. Logging captured, lithological, alteration, mineralization, structural and weathering information. Drill core also provided geotechnical data based on physical counts of and physical measurement of angles, hardness, roughness, of discontinuities and visual assessment and description of structural features. Geological logging is qualitative in nature noting the presence of various geological features and their intensities using a numerical 1-5 scale. Quantitative features of the logging include structural alpha and beta measurements captured as well as magnetic susceptibility data. The entire DDH are logged and photographed. Chip trays are also photographed for the record. Diamond Core Drilling • Recoveries were measured by the driller and/or offsider whilst in the splits on the rack at the rig site using a handheld tape measure. Recoveries were written in permanent marker on a core block placed in the core tray. The Geologist and/or field assistant measured the length of recovered core in the trays when meter marking the core. Recovery is recorded as a percentage per run. • PQ diameter core was used in more broken ground close to surface in order to maximize recoveries. Additionally, the driller adjusted the length of runs depending on ground conditions, shorter runs were used in intervals of more challenging ground conditions. The driller used variable penetration rates to maximize recoverable core. At this point there is no observed relationship between sample recovery and grade, although faults and shear areas are zones that are amenable to lower recoveries at Pearse North 5 Diamond drill holes were completed in the program being reported for a total of 329.80m of drill core. Reverse Circulation RC drill holes are sampled on 1 metre intervals. There is no subsampling of RC intervals. 10 Criteria Quality of assay data and laboratory tests www.kingstonresources.com.au JORC Code explanation Commentary etc and whether sampled wet or dry. • For all sample types, the nature, quality and appropriateness of the sample preparation technique. • Quality control procedures adopted for all subsampling stages to maximise representivity of samples. • Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling. • Whether sample sizes are appropriate to the grain size of the material being sampled. • RC samples are collected directly from the rig cyclone that has a cone splitter attached. An approx. 1-2kg sample is collected directly into a numbered calico bag with a 1:20 field duplicate collected at the drill rig. No sub sampling was done with RC samples. • Routine QAQC was used in the sampling process. Blank material was introduced at 1:20. Certified Reference Material was introduced at a ratio of 1:20 and in areas of identified mineralization. • Samples from the field are dispatched to the sample preparation facility in Orange where they are dried, crushed and pulverised with a 150g pulp subsample collected for analysis. • Sample representivity and quality is assessed using KSN QAQC protocols. • Diamond Drill Core • Recovered core was subsampled by the logging geologist. Samples ranged in size from 30cm to 1m. all samples were delineated to geological contacts. Individual samples were cut in half using a modified brick saw. The blade was consistently situated 5 degrees to the left of the orientation line where available. • Half core HQ samples were collected to a minimum size of 30cm to ensure sufficient representivity of sample for assay. This method is appropriate to capture the finer levels of geological detail not available in RC drilling (majority of holes at Pearse North are RC). The increased detail of logging and sampling will provide greater confidence in ensuing geological and resource models. • The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. • For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. • Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established. • Geochemical analysis is carried out on all samples using a standardised analytical suite and sample preparation protocol. • Gold analysis is determined by fire assay (FA) by using lead collection technique with a 50g sample charge weight and AAS instrument finish. Gold by Fire Assay (FA) is considered a “complete or total” method for total recovery of gold in sample. • A multi (42) element suit was used for full geochemical coverage. This was a 4 Acid Digest with an ICP-OES finish. The 4 Acid digest is a total method. Historically Aqua Regia has been used at Mineral Hill. Kingston has decided to use the more robust 4 acid digest for its drilling programs. The sample 0.2g (df=500) is digested with nitric, hydrochloric, hydrofluoric and perchloric acids to effect as near to total solubility of the sample as possible. With most silicate based material, solubility is to all intents and purposes complete, however, elements such as Cr, Sn, W, Zr, and in some cases Ba, may prove difficult to bring into solution. This digest is in general unsuited to dissolution of chromite, titaniferous material, barite, cassiterite, and zircon. In sulphidic samples, some of 11 Criteria JORC Code explanation Commentary • • • • • Verification of sampling and assaying • The verification of significant intersections by either independent or alternative company personnel. • The use of twinned holes. • Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. • Discuss any adjustment to assay data. Location of data points • Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. • Specification of the grid system used. • Quality and adequacy of topographic control. www.kingstonresources.com.au the sulphur may be lost (as H2S) or is partially converted to insoluble elemental sulphur. Antimony can also partly be lost as volatiles under this digest. Some minerals may dissolve, or partly dissolve and precipitate the element of interest. Examples are silver, lead in the presence of sulphur/sulphate, barium in the presence of sulphur/sulphate , Sn, Zr, Ta, Nb through hydrolysis. Routine QAQC was used in the sampling process. Blank material was introduced at 1:20. Certified Reference Material was introduced at a ratio of 1:20 and in areas of identified mineralization. If a 3SD exceedance of Au or Base Metal (Ag, Cu, Pb, Zn) sample was detected, the laboratory was contacted to re-assay the CRM and adjacent samples. There were no QAQC fails in the Pearse North data set.. Internal laboratory QAQC is analysed and reviewed in addition to the Company QAQC. For drill core- Lab duplicates were used of the crushed primary sample. Two samples of the primary crushate were analysed and assessed for reproducibility. Half Core sampling is a standard industry practice and appropriate for the nature of this drill campaign (Validation of previous results). • • Assays and mineralised intercepts are considered as Pre