Manuka Resources Limited Unveils Robust JORC-Compliant Ore Reserve & Stockpile Pre-Feasibility Study Highlighting Silver and Gold Potential
Friday, May 30, 2025
at
11:19 am
This comprehensive JORC‐compliant report details sampling, assay, and estimation methods used to evaluate the Wonawinta and My Boppy deposits. It covers drilling, bulk sampling, quality control, resource modelling, and metallurgical testwork, alongside environmental and infrastructure considerations, and confirms that estimated resources meet pre‐feasibility criteria with ±30% accuracy.
The announcement is an extensive technical report detailing the procedures, methodology, and results supporting the mineral resource and ore reserve estimates for two related mining projects. The document outlines, in depth, how sampling and drilling were conducted, how bulk and sub‐samples were handled, and which industry best practices were applied to ensure that the data accurately represents the mineralization. It describes techniques from reverse circulation and diamond drilling to sonic drilling on stockpiles and waste dumps, and it discusses how bulk density and moisture measurements were taken to convert volumes into tonnes. The report also explains the detailed quality assurance and quality control measures used during sample collection, preparation, and laboratory analysis through accredited laboratories.
A significant section of the report focuses on the application of the 2012 edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the JORC Code). In this context, the report documents the classification of resources into measured, indicated, and inferred categories and then details how modifying factors—such as mining dilution, recovery rates, cut-off grades, processing costs, and environmental and regulatory considerations—were applied to convert these resources into a declared Probable Ore Reserve. Throughout the document, the reporting criteria are explained comprehensively with supporting commentary on each aspect, from geological continuity and grade distribution to metallurgical testwork that informs recovery assumptions using conventional comminution and leaching processes.
In addition to technical details, the report addresses infrastructure and environmental matters. It provides a list of approvals and permits from local councils and state agencies, notes the availability of power, water, transportation, and accommodation, and discusses the ongoing requirements for waste management and ecological rehabilitation. The overall level of confidence in the estimates is described as robust, being supported by numerous site visits, extensive historical data, and modern survey techniques such as drone LIDAR to accurately define stockpile volumes.
The document concludes that both the stockpile and in‐ground resource evaluations are detailed to a pre‐feasibility study level of accuracy (approximately plus or minus 30%). It emphasizes that while the current estimates form a solid technical basis for further development and economic evaluation, there remain areas for future work including additional infill sampling and refinement of metallurgical recoveries. This comprehensive technical disclosure thus serves as the underpinning for future strategic decisions regarding project development and financing.