Lyceum 2021 | Together Towards Tomorrow
Saiba como a equipe da Solgold Australia PLC, no Equador, está trabalhando para compreender os sistemas de pórfiro de Cascabel (projeto Alpala) usando uma combinação de soluções da Seequent.
O Leapfrog Edge foi configurado para se integrar de maneira direta e dinâmica ao projeto do Leapfrog Geo para que ele seja rapidamente atualizado com novas informações e gere estimativas de recursos em tempo real. O uso do Seequent Central para gerenciamento de modelos garante uma única fonte de informações confiável e compartilhada que a sede em Brisbane e a equipe de campo no Equador usam para colaboração em tempo real.
Overview
Palestrantes
Stephen Law
Senior Technical Lead, Seequent
Benn Whistler
Technical Services Manager, SolGold plc
Duração
30 minutos
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Find out more in our free webinar, how to reduce geological uncertainty with implicit modeling
Lyceum 2021[00:00:10.859]
thank you everybody for joining us on
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Lyceum 21 today,
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my name is Ben whistler, I’m tech
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services Manager with sold gold
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PLC
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and everybody my name’s steve law and I’m
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senior technical lead for geology
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with sequins
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and then is going to start the presentation.
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So today we will describe
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how utilization of
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sequence um Central
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server and leapfrog
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geo and leapfrog edge software
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has enabled sold gold
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to implement a systematic process
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for updating
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um real time geological
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models and the
[00:00:55.429]
associated mineral resource
[00:00:57.450]
estimates.
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Um and
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um
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so as you can see uh
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the title of the presentation
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suggests that it’s the integration of
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sequence leapfrog geo and leapfrog edge
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to systematize internal resource
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estimations
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um at the Kampala for free
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copper gold deposit in cascabel,
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which is in Northern Ecuador and it’s also
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being applied to other projects held by the
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company in Ecuador, some of which are nearing
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resource estimation stage
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as we speak
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next slide,
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uh sole goal is fueling this sustainable
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future with copper. The world needs copper
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and the casket. Bell copper gold
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project in Northern Ecuador
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is the flagship of sole Goal PLC,
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which is a leading exploration company
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focused on the discovery definition
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and development
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of world class copper gold deposits.
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In 2018
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sold gold was recognized by mines
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and money for him as an example of
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excellence in the industry
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and continues to strive to deliver objectives
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sufficiently and in the interests of shareholders.
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Sole goal is the largest and most
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active uh concession
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holder in Ecuador
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and we aggressively explore
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the length and breadth of
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the entire country, which is highly
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perspective,
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a portion of the Andean
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copperbelt
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Sell Gold holds an 85%
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registered and beneficial interest in answer
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The Cascabel licenses 100%
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owned by answer and sole goal is
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listed on the Toronto Stock Exchange and
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also the London Stock Exchange.
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Uh The situation, so here
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we are in Northern Ecuador um
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The project is hosted within ECE
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and rocks of the Andean copperbelt
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and that particular medalla
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genic sequence is responsible for
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large percentages of the world’s copper
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and gold. The Apollo deposit is
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sold gold flagship asset and
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it’s actually one of the largest independent
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copper and gold development assets
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globally and regarded widely
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as a tier one
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exploration success
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and probably one of the top three
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copper and gold projects on
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the planet. In the last decade
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we’re very proud of.
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The current shareholder register reflects
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significant interest in cascabel
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amongst major mining houses including
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BHP and Newcrest major shareholders.
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The al Paula deposit is located
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within the western cordillera of
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Ecuador, which again
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is in the heavily endowed and in copperbelt.
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Um And in fact
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the indian culpability is renowned as the
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base for nearly half the world’s copper production.
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The project area at
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castel hosts mineralization
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of sn age within sn
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aged intrusions. Um
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And this is also the same age as numerous
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Tier one deposits throughout
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the indian papa belt particularly
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uh of note, some of the giant
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Chilean deposits
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to the south. Uh The
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Apollo deposit lies central
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to a cluster
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of essen aged poor freeze,
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which is fairly typical
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um of large deposits
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And um a number
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of prospects also exist within
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that cluster, including the Taniyama America
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and Aguinaga, poor free copper
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and gold deposits. And we
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as a company have completed over
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260,000 m
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of diamond drilling at the basketball
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project thus far
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using directional diamond drilling techniques.
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And that much drilling has brought us very
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close to um completion
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of pre feasibility studies,
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you know, uh
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now in terms of modeling
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workflows and hosting
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all the data within one
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major project, which is what we’re doing at
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the moment.
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Um the site team is continually
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engaged in advancing the understanding
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of poor free systems at cascabel
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and a combination of sequence solutions
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using leapfrog geo and leapfrog
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edge with sequin central
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of course
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um are in use now
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using secret sequence central
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for model management means
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that projects are shared amongst the team,
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our team of geoscientists and
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this single source of truth
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um allows
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beneficial discourse between,
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say a management group that might be in
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London or Brisbane and
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the site team in Ecuador
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um
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a key component has been leapfrog
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Edge and
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internal resource estimations
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which the company performs
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um
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and leapfrog Edge has an
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extension is actually an extension
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to Electoral geo and so Edge
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links directly and dynamically with
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electoral geo project which is where all
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the models are
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and it means it can rapidly update
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with new information as drilling continues,
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enabling the team to produce
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what really could be called real time
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resource estimations.
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Um geologists are able to simply
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publish an updated leapfrog
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geo project
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utilizing the latest trillion data
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to central and then open the
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link estimation leapfrog
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edge project
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and basically just right click
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on any of the measures that have been updated.
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For example domain shells and
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upload the latest
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geology model from that branch into the
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estimation project.
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So what that does for us is a dynamically
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runs a resource estimate for us.
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The remaining quality control required
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thereafter is to review the vari
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ah graffiti and and estimation search
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parameters of course and
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finalized model validation and
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and there we go we have a quality outcome for
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internal reviews. Obviously
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if you’re a mid tier
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and growing company like sole goal
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that that’s made a significant discovery
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and you’re in the spotlight. Um
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then
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the quality and results of a
[00:07:34.949]
mineral resource estimate,
[00:07:36.939]
especially early ones
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um is absolutely critical. So
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being able to have an early idea
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um of what a mineral resource
[00:07:46.079]
estimate result might be a huge, hugely
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beneficial for sole goal
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as a company.
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Um This is just a quick example
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of what leapfrog can do. These are geological
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models
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of an open pit and underneath
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a block cave at the el Pollo
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deposit and on the right you can see
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the alteration models. So
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it’s just a nice visual to give you an idea
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of how powerful leap from G. I can
[00:08:14.250]
be and
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and there’s the integration with leapfrog edge
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and so thank you for your
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attention, I’ll hand over now
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for the technical aspects
[00:08:25.139]
of the leapfrog edge and mineral
[00:08:27.529]
resource estimation with
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steve Law, senior technical lead
[00:08:31.899]
geology at sequence.
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Thanks Ben.
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We first set up the edge model in september
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2018 and
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both the edge and leapfrog
[00:08:44.860]
geo models are held within sequence. Central
[00:08:48.840]
sequence Central has the capability of
[00:08:51.039]
doing quite a few different workflows
[00:08:53.110]
but we set up a fairly simple workflow
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based on skill differentiation
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in this case it meant we build a separate
[00:09:00.139]
geology branch and a separate
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resource block model branch
[00:09:06.309]
in each one the geologist works on the
[00:09:08.320]
geology models and
[00:09:10.740]
the previous versions are
[00:09:12.820]
stored and recorded for all time
[00:09:14.909]
and the latest iteration is always
[00:09:16.960]
at the top of the branch
[00:09:19.240]
correspondingly in the estimation
[00:09:21.820]
branch we build
[00:09:23.970]
the block models and these are dynamically
[00:09:26.299]
linked across to the volumes
[00:09:28.620]
within the geology model. So as
[00:09:30.779]
the geology model gets updated,
[00:09:33.240]
we load the latest
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uh domains across from there
[00:09:37.970]
into the estimation project.
[00:09:40.740]
And then the block model
[00:09:42.759]
will update
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the dynamic linking functionality of leapfrog
[00:09:47.929]
Geo to leapfrog edge provides
[00:09:50.159]
a significant benefit in terms of the time
[00:09:52.409]
taken
[00:09:53.940]
to update a resource estimate
[00:09:56.240]
combining with sequence. Central allows even
[00:09:58.399]
further productivity and collaboration
[00:10:00.419]
opportunities.
[00:10:02.240]
The setup can be used from the preliminary
[00:10:04.679]
economic assessment right through
[00:10:07.029]
and two including production.
[00:10:10.039]
Next slide, Please
[00:10:14.059]
talk a little bit about the actual
[00:10:16.129]
methodology behind
[00:10:18.210]
these processes. So the geology
[00:10:20.529]
model so cold usually from geo
[00:10:22.860]
to undertake three D. Geological modeling
[00:10:25.480]
at the Alcala deposit.
[00:10:27.639]
This work was based on hand drawn
[00:10:29.669]
cross sectional and level plan interpretations
[00:10:32.470]
of mythologies, intrusive
[00:10:34.490]
phases and courts for an abundance,
[00:10:37.740]
mythological modeling of intrusive phases
[00:10:39.850]
and host rocks as well as strata,
[00:10:41.909]
graphic modeling of volcanic host rocks,
[00:10:44.840]
the vein abundance modeling of B type quartz
[00:10:47.049]
veins
[00:10:48.039]
and then there are mineralization models of copper
[00:10:50.370]
and gold at high medium
[00:10:52.480]
and low guide
[00:10:54.240]
grade, sorry, guidance envelopes
[00:10:56.409]
at different cutoffs of 1.50
[00:10:59.190]
point 70.15
[00:11:01.409]
copper equivalents percentages.
[00:11:05.740]
A lot of work into the geological
[00:11:07.889]
understanding. And it was a
[00:11:10.200]
consultant named steve Garwin, who is well known
[00:11:12.250]
in poor free deposits, used
[00:11:14.440]
the anaconda method to
[00:11:16.440]
work on the geometrical understanding
[00:11:18.480]
of the deposit and its internal timing
[00:11:20.750]
relationships between rock phases veins
[00:11:23.350]
and copper gold grades.
[00:11:25.539]
And this was collated into hand
[00:11:27.620]
drawn cross sections around 70
[00:11:29.870]
m spacings
[00:11:31.440]
on an orientated northeast and
[00:11:33.610]
centered upon a northwest trending baseline
[00:11:37.039]
Hand drawn level plans where it approximately
[00:11:39.320]
200 m levels throughout the deposit.
[00:11:43.340]
This work was then taken through
[00:11:45.429]
into the three D. modeling
[00:11:47.750]
of Leapfrog Geo and
[00:11:51.539]
the resultant volumes
[00:11:53.659]
were compared against the original cross sections,
[00:11:55.759]
et cetera and they match quite
[00:11:57.879]
nicely
[00:11:59.039]
um leapfrog geo allows you to
[00:12:02.039]
use the data inherently, but also
[00:12:04.370]
you can modify with
[00:12:06.519]
your own poly lines afterwards
[00:12:08.659]
to make the shapes as accurate
[00:12:10.720]
as you need to represent your deposit.
[00:12:14.440]
In the mythology model, the major rock types
[00:12:16.669]
of the cascabel tenement consists
[00:12:18.909]
of a tertiary sequence of anti Semitic
[00:12:21.000]
Lovas and volcano sedimentary
[00:12:23.320]
rocks.
[00:12:24.740]
A series of horn blend bearing, die rights,
[00:12:27.360]
courts, die rights and total lights
[00:12:29.549]
intruded the volcano sedimentary sequence
[00:12:32.009]
as plate on stocks and diets.
[00:12:34.440]
Oh, drilling has defined
[00:12:36.549]
a northwest trending steeply northeast
[00:12:39.100]
dipping corridor known as the greater
[00:12:41.200]
el Pollo trend.
[00:12:42.840]
This trend is centered upon a sin mineralization,
[00:12:45.419]
causal courts, thyroid intrusion,
[00:12:48.110]
It’s referred to as QE 10 and
[00:12:50.220]
it’s cut by a series of intra mineralization
[00:12:52.860]
late and post mineralization stocks,
[00:12:55.129]
dikes and bridges
[00:12:56.740]
of die right horn blend. I write
[00:12:58.750]
court star, right tone light and
[00:13:00.909]
granted I right
[00:13:02.549]
intrusions have been placed episodically
[00:13:05.029]
such that each subsequent intrusion has
[00:13:07.159]
introduced mineral izing fluids.
[00:13:09.539]
And these are typically defined by
[00:13:11.720]
poor freeze type courts and courts. Self ID
[00:13:13.870]
veins.
[00:13:15.740]
They have re mobilised
[00:13:18.210]
existing mineralization or introduced
[00:13:20.240]
new criminalization and contributed
[00:13:22.679]
to localized over printing and destruction
[00:13:24.840]
of some pre existing mineralization.
[00:13:28.340]
The intrusions are typically in
[00:13:30.379]
place with the stock like geometry
[00:13:32.460]
that is elongate in the northwest
[00:13:34.500]
direction, but they can also have
[00:13:36.529]
vertical and lateral, extensive northwest
[00:13:39.220]
trending steeply dipping dyke
[00:13:41.289]
extensions beyond their stock
[00:13:43.580]
margins. Next slide
[00:13:45.600]
please.
[00:13:49.639]
The geometry of the various pathologies
[00:13:51.940]
at Apollo is now well understood
[00:13:54.509]
and has been modeled from the job drilling
[00:13:57.250]
and it shows extensive self vertical
[00:13:59.659]
continuity and highly complex
[00:14:01.870]
intrusive relationships.
[00:14:04.440]
The application of the anaconda method to
[00:14:06.480]
geological mapping and drill core logging
[00:14:08.700]
identified a total of 31
[00:14:10.950]
likely intrusion phases,
[00:14:13.039]
And these were grouped into 18 major
[00:14:15.049]
rock groups which have been delineated
[00:14:17.480]
based on their mineral
[00:14:19.090]
realization phase and resource group.
[00:14:21.840]
All the major rock groups have been incorporated
[00:14:24.529]
into the three D. Geological model
[00:14:26.590]
of the al parla deposit.
[00:14:30.240]
A total of 20 major phases immunization
[00:14:32.720]
have been delineated based on relative
[00:14:35.139]
timing relationships and poor free
[00:14:37.240]
vein stages.
[00:14:38.840]
These have been simplified into 11
[00:14:40.960]
major rock groups which have been
[00:14:43.110]
put into the three D. Model
[00:14:48.039]
and they formed the major low grade,
[00:14:50.120]
medium grade and high grade stages of mineralization
[00:14:52.909]
at all Paula.
[00:14:54.440]
The majority of the copper and gold mineralization
[00:14:57.080]
was added to the system by the
[00:14:59.159]
courts derive or qd 10 intrusion
[00:15:01.669]
with supplementary editions through time
[00:15:04.269]
with the injection of the intra
[00:15:06.360]
mineralization, intrusive phases,
[00:15:09.539]
and there was only minor metal edition from
[00:15:11.690]
late mineralization and post mineralization
[00:15:14.490]
intrusions in the system.
[00:15:17.139]
Another important component of the
[00:15:19.159]
model is the vein abundance model.
[00:15:21.740]
The relationship between B type quartz
[00:15:23.779]
veins, abundance, and copper gold
[00:15:26.409]
and copper equivalent grades throughout the deposit
[00:15:28.940]
show a linear relationship between
[00:15:31.379]
grade and vain abundance,
[00:15:33.740]
And has been defined with selected examples
[00:15:36.159]
of .15%. Copper equivalence
[00:15:38.759]
.7 and 1.5%
[00:15:41.639]
equating 2.55%
[00:15:43.669]
the veins 4.1%
[00:15:46.240]
and for 9.4%
[00:15:48.519]
the veins respectively.
[00:15:51.039]
The most important indicators of
[00:15:53.120]
high grade mineralization include the presence
[00:15:55.470]
of an early stage courts, thyroid intrusion
[00:15:58.230]
containing all the early stage. For freestyle
[00:16:00.470]
vein types with elevated vein
[00:16:02.639]
abundance and an increased ratio
[00:16:05.110]
of chalco pyrite too paranoid.
[00:16:07.840]
These relationships are clearly evident when representing
[00:16:10.419]
B type, courts main abundance and
[00:16:12.639]
copper equivalent grades against each rock
[00:16:14.720]
type or group in a box and whisker
[00:16:16.960]
plot. Next
[00:16:19.149]
slide please.
[00:16:22.340]
So we’ve got a three D. Geological
[00:16:25.240]
mythology model and then we also
[00:16:27.340]
develop a mineralization model.
[00:16:29.840]
And this is used using the numeric modeling
[00:16:32.000]
capability of leapfrog. Geo
[00:16:34.740]
Mineralization at Alcala took place
[00:16:36.750]
immediately over approximately
[00:16:39.070]
800,000 years. From dating studies
[00:16:41.629]
conducted by Garwin album
[00:16:44.019]
2017.
[00:16:45.940]
Each of the 11 rock groups recognized
[00:16:48.490]
sequentially added its own stage of
[00:16:50.519]
port-related veiny and mineralization
[00:16:52.769]
to the intrusive complex and
[00:16:54.990]
these have been modeled sequentially with
[00:16:57.269]
later phases. Excising preexisting
[00:16:59.639]
phases.
[00:17:01.840]
Numeric models are run at three
[00:17:04.259]
different cutoffs. Copper equivalent
[00:17:06.400]
cutoffs for low medium and
[00:17:08.450]
high grade.
[00:17:10.940]
The key point in understanding the Al Pollo deposit
[00:17:13.200]
relates to the manner in which the geometric framework
[00:17:15.720]
of various pathologies and intrusive
[00:17:17.849]
bodies. Subsequently controlled the successive
[00:17:20.720]
geometries and donation of the poor french
[00:17:23.259]
style courts vein abundance.
[00:17:25.539]
And this correlates very
[00:17:27.589]
well with the distribution of copper
[00:17:29.619]
and gold.
[00:17:30.839]
Yeah. Next stage
[00:17:32.970]
please. Oops.
[00:17:36.140]
Yeah. So we have a underlying
[00:17:38.609]
mythology model and an underlying
[00:17:40.609]
method mineralization model,
[00:17:43.240]
leapfrog has a combined model
[00:17:45.349]
functionality where these two are joined together
[00:17:47.869]
and you end up with
[00:17:50.440]
multiple domains based
[00:17:52.769]
on grade and mythology.
[00:17:56.640]
These are the domains that are brought across from
[00:17:58.680]
the geology model via direct link
[00:18:00.750]
into the estimation project
[00:18:02.779]
using leapfrog central.
[00:18:05.339]
Yeah, estimation domains
[00:18:07.769]
have subsequently been identified
[00:18:10.339]
or simplified by combining the
[00:18:12.400]
model features in a manner which demonstrates
[00:18:14.789]
the relationship between grade and the
[00:18:16.849]
geological history of the deposit.
[00:18:19.240]
So they are based on geologic knowledge but
[00:18:21.309]
also using statistical
[00:18:23.490]
analysis. Using the concept of stationary
[00:18:26.089]
T leapfrogged
[00:18:29.089]
utilizes ordinary creaking
[00:18:31.160]
to estimate the domains.
[00:18:33.240]
The way the grouping has been set up is
[00:18:35.500]
that changes can be made easily in the
[00:18:37.549]
future. So if they’re different combinations
[00:18:39.960]
of required of the mineralization
[00:18:42.480]
and mythology volumes as
[00:18:44.829]
new information comes through, then
[00:18:46.859]
we can modify the process
[00:18:49.059]
within leapfrog edge
[00:18:51.640]
each of the domains. KZ two KZ KZ
[00:18:54.240]
002 KZ 10 are
[00:18:56.369]
independently run for copper,
[00:18:58.420]
gold, silver and molybdenum.
[00:19:00.680]
And that’s using ordinary creaking and
[00:19:03.299]
lead, zinc uranium using inverse
[00:19:05.390]
distance square.
[00:19:06.940]
And the final men resource estimate
[00:19:08.960]
is reported at multiple cut offs
[00:19:11.259]
on the copper equivalents
[00:19:14.940]
validation is a very important step
[00:19:16.970]
obviously. So we have the
[00:19:19.029]
capability of doing swath
[00:19:21.099]
plots and these are embedded within the bloc model
[00:19:23.549]
so that as the
[00:19:26.440]
uh new data is added. And
[00:19:28.579]
the underlying mythology and mineralization
[00:19:31.170]
models change. Then the swath plots
[00:19:33.400]
update as well. So you can readily
[00:19:35.529]
validate your data as well as being
[00:19:37.650]
able to visualize all the information
[00:19:39.670]
on the screen
[00:19:42.440]
and central stores the project timeline.
[00:19:44.589]
So a previous version of the block model
[00:19:46.710]
can be reviewed at any time
[00:19:49.740]
and then it’s going to just finish
[00:19:51.750]
off the presentation for us.
[00:19:53.940]
Thank you Stephen. Yes, it certainly
[00:19:56.140]
streamlines what is a
[00:19:58.740]
or could be viewed as a fairly complex
[00:20:01.440]
process.
[00:20:03.140]
So overall we have the integration of
[00:20:05.380]
leapfrog edge estimation
[00:20:07.410]
software with leapfrog Geo
[00:20:09.650]
software and this has
[00:20:12.380]
been proven to allow
[00:20:14.839]
sold gold to
[00:20:17.130]
produce internal resource estimation
[00:20:19.740]
checks to be run dynamically
[00:20:22.059]
as new information is received
[00:20:24.160]
from the field
[00:20:25.539]
and in a nutshell leapfrog
[00:20:27.569]
it gives us the power to run our
[00:20:29.619]
own internal resource estimates
[00:20:32.240]
um which empowers
[00:20:34.450]
us to internally
[00:20:36.619]
audit the work performed
[00:20:38.809]
by independent consultants
[00:20:40.950]
and ensure they are being realistic.
[00:20:43.500]
It also gives us the advantage of
[00:20:45.509]
having a good idea of potential
[00:20:47.869]
outcomes of any given
[00:20:50.019]
resource estimate ahead of time,
[00:20:52.740]
which of course helps the company
[00:20:55.380]
gauge appropriate expectations.
[00:20:58.539]
So thank you all for listening
[00:21:00.779]
and thank you by CM 21.
[00:21:05.940]
Yeah.