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. • No drilling has been undertaken by Petratherm although limited historical drilling exists. Additional details from historic drilling are unknown. 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. • All maps and locations are in UTM grid (GDA2020 Z53). Drill hole positions have been reproduced from SA Government open file databases and the accuracy of this data is unknown. Data spacing and distribution • Data spacing for reporting of Exploration Results. • Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. • Whether sample compositing has been applied. • No drilling or sampling has been undertaken by Xxxxxxxxxx although historical drilling exists. • Data spacing is insufficient to establish the degree of geological and grade continuity required for a Mineral Resource estimation. Orientation of data in relation to geological structure • Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. • If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. • No drilling has been undertaken by Petratherm although limited historical drilling exists. • The relationship between the drilling orientation and the orientation of key mineralised structures has not been confirmed. Criteria JORC Code explanation Commentary Sample security • The measures taken to ensure sample security. • No sampling has been undertaken by Xxxxxxxxxx although limited historic sampling exists. • Additional details from historic drilling are unknown. Audits or reviews • The results of any audits or reviews of sampling techniques and data. • No sampling has been unde...
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. • The historic data cannot be verified and it has been collected from publicly available sources. 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. • The survey method for collar co-ordinates is not always presented in historic data. Visual checks have been applied where possible using aerial photography and/or Google Earth imagery to locate holes correctly if errors are discovered. Data • Data spacing for reporting of Exploration Results. spacing and • Whether the data spacing and distribution is sufficient to establish distribution the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. • Whether sample compositing has been applied. • Data has been collected at various spacing. Orientation • Whether the orientation of sampling achieves unbiased sampling • The historic data is to be used as a guide to future exploration and of data in of possible structures and the extent to which this is known, at face value has been collected in a manner that is sensible with relation to considering the deposit type. respect to gross geological trends however more detailed geological • If the relationship between the drilling orientation and the interpretation would be required to assess this further. structure orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material.
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. 2011 Swole Lake exploration drill program (Landore Resources Canada Inc.): • No twinned holes were used to validate intersections or assays. • Xxxxxxx states that ALS assay results were checked by the lab manager before the hard copy was sent in the mail, and/or emailed to the client. It is not clear if the returned files are loaded directly into Landore’s database or if the data was entered manually. GT1 was unable to confirm the sampling preparation processes that Xxxxxxx employed and therefore cannot verify that they meet JORC 2012 compliance requirements. GT1 was not able to verify sampling and assaying documentation, data verification, or data storage protocols. 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. 2011 Swole Lake exploration drill program (Landore Resources Canada Inc.): Landore state: • Each casing location was recorded using a Geneq Inc. SkyBlue II handheld Trimble GPS in UTM projection NAD 83 Zone 16, although GT1 cannot confirm this. • A Reflex EZ-shot down-hole survey instrument was used to monitor the inclination deviation during drilling. • Upon completion of drilling, a Reflex Maxibor II instrument (optical method) was used to obtain both inclination and azimuth deviation. GT1 was unable to verify the accuracy or quality of surveys used to locate drill holes, channel samples or grab samples. Data spacing and distribution • Data spacing for reporting of Exploration Results. • Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. • Whether sample compositing has been applied. • Data spacing is insufficient to support a sufficient degree of geological or grade continuity appropriate for a Mineral Resource estimate. Criteria JORC Code explanation Commentary Orientation of data in relation to geological structure • Whether the orientation of sampling...
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. • The assay results for L7-0010A intervals from 285 to 300m were checked by ¼ core sampling and assay by independent laboratory Bureau Veritas (Canning Vale) and returned a weighted mean assay value of 9.16 g/t over the 15 m interval compared with 7.09 g/t mean from the origin Gekko assays. • All field data is entered directlyinto an excel spreadsheet with front end validation built in to prevent spurious data entry. • Data is stored on a server at the A1 Mine with daily backups. Backed up data is also stored offsite. • Significant intersections are reviewed by geological staff upon receipt, to ensure the intersections match the logging data, with the checks including verification of QAQC results. 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. • All holes are labelled during the drilling process, and all holes have been picked up by licensed surveyors, Xxxxxx Xxxxxxx and Associates. • Holes are labelled by drillers upon completion of the hole. • Down hole surveys were taken at 15m, and every 30m after this with a reflex single shot camera. • Grid used is MGA_GDA94. • The topography control is of a high standard and consists of a DTM surface Data spacing and distribution • Data spacing for reporting of Exploration Results. • Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. • Whether sample compositing has been applied. • Drill hole spacings are generally in the order of a 20m x 20m up to 50m x 50m for the inferred areas of the resource and down to less than 10m x10m for the indicated resources. • There is good correlation between sections on the larger structures, with some of the narrow reefs not as continuous across some sections. Given the density of drilling, good continuity of structures and high grades between sections in the area being drilled, the drilling...
