About this webinar:
In this free webinar, narrow vein mining (NVM) expert, Paul Salmenmaki, used a case study to explore three areas that should be monitored to optimize dilution for mechanized NVM methods in operating mines.
It offers viewers a list of actionable recommendations for use in both longhole open stoping (LHOS) as well as mechanized cut and fill (CAF) mining methods. The live webinar took pace on 27 May 2020. Click the button below to download the PDF of the presentation and scroll down to watch the Q&A replay from both the sessions.
Q&A from session 1
Q&A from session 2
About Paul Salmenmaki, P.Eng., Principal Mining Engineer
Paul is a mining engineer with more than 20 years of experience in mine engineering services, mining operations, explosives and blasting consulting, and all levels of studies from scoping to feasibility. His expertise has largely been developed in the field of underground copper-nickel mines, industrial minerals, narrow vein precious metal deposits, and aggregates. He has also worked on numerous technical studies and authored an article in the E&MJ for dilution mitigation, which examined narrow vein drift and fill, as well as longhole open stoping mining methods, and suggested improvements for drill and blast designs, and equipment utilization of existing and proposed fleets.
He is a proficient user of a number of mining software packages, including Datamine Studio 3, CAE Studio 5D Planner, EPS Scheduler, Deswik CAD, Integrated Scheduler and Scheduler, and AutoCAD.
About Paul and webinar intro
Recommended further reading
Narrow-vein modelling and Mineral Resource estimation
Narrow veins are major sources of many commodities, including gold, silver, tin, tungsten, coal, uranium and sometimes copper, lead and zinc. Mining this narrow style of mineralization can be considered as relatively high risk, not only due to the high cost of exploration and mining per unit of metal, but also to the frequently limited size of the resource. Estimation of the Mineral Resources and their location can be difficult. Underground development is generally required to confirm the continuity of mineralization.
Narrow vein minimum dilution case study
AMC has conducted numerous studies to reduce dilution for mechanized narrow vein (NV) mining methods in operating mines. Dilution can be classed as planned or unplanned. Planned dilution accounts for waste material incorporated into the stope when designing practical mining shapes. Planned dilution will depend on the vein geometry, thickness, orebody dip, and local ground conditions. (minimum) dilution that could be reasonably applied to a NV orebody.
Recent developments in the performance of underground hard rock mines
AMC has compiled the largest validated database of hard rock mine productivity and cost information through undertaking performance diagnostics at hundreds of operations world-wide. In this presentation, Andrew Hall measures the impacts of the application of new technologies and practices on mine performance, and provides some insights into achieving high performance in underground hard rock mining.