07.05.2014 09:54:49
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IRW-News: Altona Mining Ltd.: Altona Mining Limited: Reserven weiter gestiegen auf der Kylylahti Mine, Finnland
IRW-PRESS: Altona Mining Ltd.: Altona Mining Limited: Reserven weiter gestiegen auf der Kylylahti Mine, Finnland
RESERVEN WEITER GESTIEGEN AUF DER KYLYLAHTI MINE, FINNLAND
· Enthaltenes Kupfer um 13% und enthaltenes Gold um 25% gestiegen
· Kupfermetallreserven übersteigen Vorabbaureserven deutlich
· Zweiter erfolgreicher Anstieg der Reserven
· Geschlussfolgerte Ressourcen in der Tiefe stehen für zukünftiges Reservenwachstum zur Verfügung
· Minenbetriebsdauer von 7,5 Jahren mit Zielproduktion von 650.000 t p.a.
7. Mai 2014
ASX: AOH, FSE: A2O
Altona Mining Limited (Altona oder das Unternehmen) freut sich über die Bekanntgabe eines Anstieges der Erzreservenschätzung für die zu 100% im Eigentum befindliche Kylylahti Untertagemine auf ihrem Outokumpu Kupferprojekt in Finnland. Dieser Anstieg folgt der aufgestuften Ressourcenschätzung wie schon an der ASX am 26. März 2014 bekannt gegeben.
Die Erzreservenschätzung für die Kylylahti Mine bereinigt um den bisherigen Abbau per 31. Dezember 2013 (siehe Tabelle 1 im Vergleich) liegt bei:
4,55 Mio. Tonnen mit 1,66% Kupfer, 0,83g/t Gold und 0,62% Zink mit enthaltenen:
75.651 Tonnen Kupfer, 121.915 Unzen Gold und 28.032 Tonnen Zink
Zusätzlich konnten 0,2 Mio. Tonnen geplante Produktion abgeleitet aus den Geschlussfolgerten Ressourcen als Abbaulagerbestand klassifiziert werden.
Unter Benutzung des Nettoschmelzertrages für die Konzentrat Verkäufe und dem enthaltenen Kupferäquivalent entspricht dies nun 97.400 Tonnen mit einem Grad von 2,14% Kupferäquivalent. Diese Schätzung ist höher in der Tonnage, den Graden und dem enthaltenen Metall gegenüber Schätzung vom August 2010 für die Vorproduktionsreserve (siehe Abb. 3 Ressourcenwachstum).
Altona Managing Director Dr. Alistair Cowden sagte: Dies ist der zweite folgende Anstieg in den Reserven. Wir erwarten, dass die Ausfachungs- und Erweiterungsbohrungen den Trend des Ersatzes oder weiter wachsender Ressourcen bestätigen werden. Der Anstieg der Beiproduktgrade im Gold und der enthaltenen Unzen Gold auf 122.000 hat uns sehr gefreut.
Altona plant nun einen Anstieg der Produktionsrate auf 650.000 Tonnen p.a. und einen abbaufähigen Lagerbestand von insgesamt 4,75 Mio. Tonnen der eine Produktion von mindestens 7,5 Jahren ermöglichen wird.
Interview Commodity-TV mit Dr. Alistair Cowden über den Kupfermarkt: http://bit.ly/1il6Z0o
Den Minenplan sehen Sie in Abbildung 1.
http://www.irw-press.at/prcom/images/messages/2014/5208/Altona_070514_prcom_deutsch.001.jpeg
Abb. 1: Längsschnitt der Kylylahti Mine und Minenplan
http://www.irw-press.at/prcom/images/messages/2014/5208/Altona_070514_prcom_deutsch.002.jpeg
Abb. 2: Produktionsbohrungen auf der Kylylahti Mine
http://www.irw-press.com/dokumente/Altona_070514_prcom_deutsch.pdf
Abb. 3: Kupfermetall in den Reserven
Tabelle 1: Kylylahti Erzreservenschätzung Dezember 2013
Tonnen Cu Au Zn Cu Au
(Mio.) (%) (g/t) (%) (t) (Unzen)
Bewiesene 0,57 1,43 0,66 0,66 8.151 12.000
Erzreserven
Mögliche 3,98 1,70 0,86 0,61 66.068 110.000
Erzreserven
Total Reserven4,55 1,66 0,83 0,62 75.651 122.000
Abbau 0,2 1,75 0,54 0,63 4.475 4.415
Lagerbestand
Bemerkung: Gesamtzahlen können durch Rundungen abweichen.
Diese Schätzung ist höher als die vom 30. Juni 2013 Schätzung mit 4,2 Mio. tonnen mit 1,60% Kupfer, 0,73g/t Gold und 0,63% Zink (siehe ASX Bekanntmachung vom 29. August 2013). Das enthaltene Kupfer stieg um 13% an als Ergebnis eines Anstieges von 9% in der Erztonnage und um 4% in den Kupfergraden.
Tabelle 2: Kylylahti Erzreservenschätzung, Juni 2013 (Zahlen werden ersetzt, gilt nur für Vergleichszwecke)
Tonnen Cu Au Zn Cu Au
(Mio.) (%) (g/t) (%) (t) (Unzen)
Bewiesene 0,6 1,51 0,75 0,66 9.600 14.500
Erzreserven
Mögliche 3,5 1,62 0,73 0,62 56.700 82.200
Erzreserven
Total Reserven4,2 1,60 0,73 0,63 66.700 97.700
Bemerkung: Gesamtzahlen können durch Rundungen abweichen.
Für Fragen wenden Sie sich bitte an:
Alistair Cowden James Harris Jochen Staiger
Managing Director Professional Public Relations Swiss Resource Capital AG
Altona Mining Limited Perth Tel: +41 71 354 8501
Tel: +61 8 9485 2929 Tel: +61 8 9388 0944 info@resource-capital.ch
altona@altonamining.com james.harris@ppr.com.au
Es gilt ausschließlich das Englische Original dieser Pressemitteilung
Über Altona Mining Ltd.
Altona Mining Limited ist ein Kupferproduzent in Finnland und besitzt ein großes Kupferentwicklungsprojekt in Australien.
Das Outokumpu Projekt des Unternehmens im Südosten Finnlands nahm die Produktion Anfang 2012 auf. Das Projekt schließt die Kylylahti-Untertagemine mit einer Jahreskapazität von 600.000 t und die Luikonlahti-Mühle ein. Die durchschnittliche Jahresproduktion liegt bei 9.000 t Kupfer, 9.000 Unzen Gold und 1.600 t Zink mit der Möglichkeit einer Produktionserweiterung. Die regionalen Ressourcen sind in zwei stillgelegten Minen und 4 noch nicht abgebauten Ressourcen innerhalb von 30 km der Luikonlahti-Mühle beherbergt. Finnland ist Mitglied der Eurozone und hat eine lange Bergbauhistorie, eine stabile Steuergesetzgebung (20 %) und keine weiteren Abgaben.
Altonas weiteres Herzstück ist das Roseby-Kupferprojekt nahe Mt. Isa in Queensland und eines der größten noch nicht entwickelten Kupferprojekte Australiens. Das erste angestrebte Entwicklungsziel mit 7 Mio. t pro Jahr ist die Kupfer-Gold-Tagebaumine und Aufbereitungsanlage Little Eva. Little Evas angestrebte Jahresproduktion1 soll bei 38.800 t Kupfer und 17.000 Unzen Gold für mindestens 11 Jahre Produktionsdauer liegen. Es konnte eine endgültige Machbarkeitsstudie abgeschlossen werden und das Projekt ist voll genehmigt. Altona ist derzeit in Verhandlungen mit potenziellen Partnern, um die Finanzierung dieses Großprojektes ermöglichen zu können.
Altona Mining ist an der Australian Securities Exchange und der Börse Frankfurt notiert.
1Siehe ASX-Pressemitteilung Cost review Delivers Major Upgrade to Little Eva vom 13. März 2014, die die Informationen hinsichtlich dieses Produktionsziels und die auf diesem Produktionsziel basierenden Finanzprognosen skizziert. Diese Pressemitteilung ist bei www.altonamining.com oder www.asx.com.au zu finden. Das Unternehmen bestätigt, dass alle wesentlichen Annahmen, die das Produktionsziel unterstützen und die auf diesem Produktionsziel basierenden Finanzprognosen, die in der oben genannten Pressemitteilung erwähnt werden, weiterhin gültig sind und sich nicht wesentlich geändert haben. Es gilt ausschließlich das Englische Original dieser Pressemitteilung.
Aussage der kompetenten Person
Die Informationen in dieser ASX-Pressemitteilung, die sich auf Explorationsergebnisse, Mineralressourcen oder Erzvorräte beziehen, basieren auf Informationen, die von Dr. Alistair Cowden BSc (Hons), PhD, MAusIMM, MAIG, Managing Director von Altona zusammengestellt wurden. Er ist Mitarbeiter des Unternehmens und verfügt über ausreichendes Wissen und Erfahrung über diesen hier vorliegenden Vererzungs- und Lagerstättentyp. Seine Tätigkeiten qualifizieren ihn als kompetente Person gemäß den Regeln des 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Dr. Alister Cowden stimmt den hier eingefügten Informationen, die auf seinen Informationen basieren, in Form und Kontext je nach Auftreten zu.
Weiter geht es in Englisch mit dem technischen Anhang.
JORC 2012
The Company has reported Reserves according to the 2012 update of the JORC Code and a full Table 1 is appended. Kylylahti is an operating mine with extensive prior disclosure. The estimates herein reflect Altonas bi-annual reserve review.
Competent Persons Statement
1. Ore Reserve Estimates: The Kylylahti Ore Reserve Estimates that are reported in this ASX Release were undertaken by Mr Antti Sorsa MSc, MAusIMM, Mine Planning Manager at the Kylylahti mine and who is a full time employee of the Company and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking 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 Sorsa consents to the inclusion in the report of the matters based on their information in the form and context in which it appears.
2. Responsibility for entire release: Information in this ASX Release that relates to Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Dr Alistair Cowden, BSc (Hons), PhD, MAusIMM, MAIG and Dr Iain Scott PhD Min. Processing, BSc Met. (Hons) who are both full time employee of the Company and who have sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking 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. Dr Alistair Cowden and Dr Iain Scott consent to the inclusion in the report of the matters based on their information in the form and context in which it appears.
3. Production target: An insignificant proportion of the estimated mine life, being less than 4.5% of the life of mine production target is based on inferred mineral resources. These inferred resources are scheduled for mining at the end of mine life and are located at the lower limit of the resource. These tonnes will be defined by infill drilling as mine development progresses deeper. Refer to ASX release of 26 March 2014 for further information on the Resource estimates for the Kylylahti Mine.
4. Copper Equivalence: When used, copper equivalence refers to copper in concentrate, not resources or reserves, or drill results. The copper equivalent grade is calculated by factoring the copper grade by Revenue from all products (Cu, Au, Zn, Ag)/ Revenue from copper.
JORC Table 1
The table below is a description of the assessment and reporting criteria used in the Kylylahti Reserve Estimation that reflects those presented in Table 1 of The Australasian Code for the Reporting of Exploration Results, Mineral Resources and Ore Reserves (The JORC Code, 2012).
Criteria Commentary
Estimation and Reporting of Ore Reserves
Mineral · The Kylylahti resource model (December
Resource 2013) was used for conversion to Ore
Estimate Reserves.
for
conversion · The Mineral Resource is inclusive of Ore
to Ore Reserves.
Reserves
Site visits · The Competent Person works at the mine and
is actively involved in the planning
process on a daily
basis.
Study status· The mine is in production and feasibility
studies have been
superseded.
· The surface level at the mine is +92
metres above sea level. The reference level
for the levels is sea level so it should be
noticed that the level values represent the
depth below the sea level not depth from
surface.
· The Ore Reserves above level 380 reflect
an operating underground mine. The Ore
Reserve for this area has been updated
based on the experience gained from
production.
· Ore Reserves below the 380 level are based
on the mine plan by the mine planning team
which includes transverse
stoping as the main mining method in that
area. The plan for transverse
stoping has been updated for this reserve
estimate utilising the experiences gained
from production in upper level longitudinal
stopes when applicable.
Cut-off para· The ore cut-off grade is based upon a Net
meters Smelter Return (NSR) value, which is
derived from copper, gold and zinc grades,
recoveries and
payabilities. Payabilities and recoveries
vary with grade and concentrate quality but
on average recoveries are copper 92%, gold
75% and zinc 49%.
Payabilities are copper 96.5%, gold subject
to 1g/t
deducti
on from gold in concentrate and zinc 50%.
· The following approach has been to take
determining NSR values to be used as
cut-off parameters in different mining
situations in the
mine:
· NSR of 15.66/t for development material
that has to be hauled to surface.
This approximates a copper grade of 0.39%.
· NSR of 28.27/t for stope boundaries where
the ore can be extracted without additional
stope preparation work. This approximates a c
opper
grade of 0.63%.
· Below level 300 a depth increment of
0.25/t is added to the NSR cut-off for
each 30m level interval representing the
change in ore haulage distance.
· At the 590 level an additional depth
increment of 2.75/t is added to the NSR
cut-off representing the overall change in
backfill haulage distance.
· Below level 590 a depth increment of
0.25/t is added to the NSR cut-off for
each 30 metre level interval representing
the change in backfill haulage distance.
· The NSR cut-off value between levels
300-750 varies from 28.27/t to 36.52/t.
This approximates a copper grade of
0.65-0.81%.
· An NSR of 52.19/t for the minimum grade
of an entire
stoping panel. This approximates a copper gr
ade
of 1.09%.
Mining The following is relevant for stoping design
factors or above level
assumptions 380:
for levels
above
level · The mining method used is longitudinal
380 open
stoping with cemented rock fill (CRF) and/or
waste rock fill. Parts of the
orebody, however, will be mined using upward
stoping
without backfill. The stopes vary in
dimension as follows: Heights between 8
metres and 30 metres, lengths between 20
metres and 50 metres and width in average
between 4 metres and 12
metres.
· A 5.5 x 5.5 metre decline is used for ore
transportation and access to development
drives. Level spacing is 25-30 metres
vertical, and development drives are
connected to the decline by access drives.
In the upper parts of the mine (levels 50
to 150) access drives are located at the
southern end of the
orebody, in the middle parts (levels 180 to
300) access
drives enter the orebody in the middle, and
development drives extend to the north and
south. In the lower parts (levels 325 and
350) the decline moves around the
orebody from the footwall to hangingwall side
, and accesses the
orebody from the northern end. On level 380
the access is again at the southern end of
the
orebody.
· Stoping generally proceeds from the
northern and southern ends of the
orebody, with mining upwards from the
bottom. Due to the
orebody plunging approximately ~25° to the
south-west, the northernmost
stopes on each level can be mined as a
bottom level
stope.
· In areas where stopes can be accessed from
above, the front end of the
stopes will be filled with CRF. The next stop
e
opening will then be blasted so that no
pillar will be left against the CRF wall,
thus maximising ore
recovery.
· Stope designs generally include dilution
to ensure that the shapes are practical and
can be mined and extracted. This dilution
is included in the
stope tonnes and grades as planned dilution.
In addition,
overbreak is assumed as unplanned dilution.
The unplanned dilution factor applied is
dependent upon the
stope width and shape. It is assumed that
approximately 0.5 metres of
overbreak will occur on both sidewalls of
the
stope. Therefore dilution varies between 5%
in wide
stopes (>20 metres) and 25% in narrow stopes
(4 metres). When
stope shape and stope location is seen as
being exceptionally difficult an additional
dilution factor of 2 to 10% is used.
· Unplanned dilution is anticipated to come
from footwall and
hangingwall in a 50/50 ratio. The diluting
material carries metal grades. The dilution
grades that are used are calculated average
resource model values for both Wallaby and
Wombat
orebodies assuming a 0.5 m thick layer on
both sides of the
stope.
· The definition of dilution here is assumed
to be the ratio of dilution tonnes /
in-situ ore tonnes (before ore loss is
applied).
· The recovery from planned stopes is
assumed to be 90% for open
stoping and 85% for upward stoping.
Additional ore losses are expected in
potentially difficult
stopes, based on their location or shape.
The unrecovered ore
(
ore loss) is assumed to result from underbrea
k
and over size material.
· The mine is using a cavity measurement
surveying (CMS) device for measuring the
actual
stope volumes. Stope recovery and dilution
of each
stope is analysed from the CMS-results and
this information is used to continuously
improve the planning and production
processes.
· The minimum stope width used is 4 metres.
· The infrastructure for mining above level
380 has been completed. Infrastructure
includes the decline, access tunnels,
development drives, ventilation
headings/rises and support headings (such
as water sumps). Electricity, water,
ventilation and water discharge systems are
also in place.
· Reserves have only been derived from
Measured and Indicated Resource
categories.
Mining · The following is relevant for stoping below
factors or level
assumptions 380.
for levels
below · The main mining method to be used between
level the 380 and 750 levels is transverse open
380
stoping with cemented rock fill (CRF) and/or
waste rock fill. Longitudinal open
stoping with cemented rock fill (CRF) and/or
waste rock fill will be used when it is
applicable due to
orebody geometry. Parts of these
longitudinal areas will be mined using
longitudinal upward
stoping without backfill. The stope height
in transverse
stoping is planned to be 30 metres, the
length between 8 metres and 45 metres. The
width in primary
stopes will be 10 metres and in secondary sto
pes
15 metres.
· The decline is used for ore transportation
and access to development drives. Level
spacing is 30 metres and development drives
are connected
to the decline with access drives.
· Access development is driven in the hanging
wall
waste rock parallel with the orebody. From
there, transverse ore drives enter the
orebody every 12.5 meters. At the northern
and southern ends of the
orebody, where transverse stoping is not
feasible, longitudinal ore drives are built
along the
orebody and the ore is mined using
longitudinal open
stoping.
· Transverse stopes may be mined in two
stages; the first stage will exploit
high-grade massive sulphides on the
footwall (east) of the deposit and the
second stage will retreat to mine largely
disseminated ore in the
hangingwall.
· Longitudinal stoping will start from the
northern end of the
orebody, and proceed upwards from the lowest
level. Transverse
stoping will start with primary stopes in
the middle of the
orebody at the bottom level, or in the
northern end when
stopes below the transverse stope have been
mined. Once primary
stopes have been filled with CRF, secondary s
topes
will be mined. Secondary stopes generally
lie between cemented primary
stopes and are filled with waste rock. Level
440 is planned to be used as a starting
level, and ore below this is planned to be
mined working below a ~5m thick ore crown
pillar which is planned to be recovered
when retreating from the production area.
More starting levels will be used where
necessary to ensure enough workable
stoping locations for steady production.
· In longitudinal stopes the front end of
the
stopes will be filled with CRF. The next stop
e
opening will then be blasted so that no
pillar will be left against the CRF wall,
thus maximising ore recovery. In transverse
stoping, primary stopes will be filled with
CRF to allow maximum recovery for the
secondary
stopes. When a secondary transverse stope is
being mined in two parts, the front end of
the first part will be filled with CRF to
allow the recovery of the second
part.
· Stope designs generally include dilution
to ensure that
stope shapes are practical and can be mined.
This dilution is included in
stope tonnes and grades as planned dilution.
In addition,
overbreak is assumed to result in unplanned
dilution. In longitudinal
stoping, the dilution factor is dependent
upon the
stope width and shape. It is assumed that
approximately 0.5 metres of
overbreak will occur on both sidewalls of
the
stopes. Therefore dilution varies between
5% in wide
stopes (>20 metres) and 25% in narrow stopes
(4 metres). When
stope shape and stope location is seen
exceptionally difficult an additional
dilution factor 2 to 10% is
used.
· In the primary stopes of transverse stoping
, both sidewalls are in ore and therefore no
waste rock dilution comes from them. The
footwall and
hangingwall ends of the stope are in waste
rock and 5-15% dilution is expected from
them. In secondary
stopes both sidewalls are made of CRF, and
5% of zero grade CRF dilution (which
approximates a 56cm layer of CRF and bogged
waste from the filled
stope below) is assumed to come from them.
The
stope ends are in waste rock similarly to
primary
stopes, and 5-15% waste rock dilution is
expected from them.
· Unplanned waste rock dilution is expected
to come from footwall and
hangingwall in a 50/50 ratio. The diluting
material carries metal grades. The dilution
grades that are used are calculated average
values for the Wombat
orebody assuming a 0.5 m thick layer on both
ends of the
stope.
· The definition for dilution here is
assumed to be the ratio dilution tonnes /
in-situ ore tonnes (before ore
loss).
· The recovery from planned stopes is
assumed to be 90% for longitudinal and 85%
for upwards
stoping. The planned recovery for primary
transverse
stopes is assumed to be 92% and for
secondary
stopes 85%. The unrecovered ore is assumed
to result mainly from failed blasts that
fail to loosen the ore or from oversize
boulders that prevent full clean-up of the
stopes.
· The mine is using a cavity measurement
surveying (CMS) device for measuring the
actual
stope volumes. Stope recovery and dilution
of each
stope is analysed based on the CMS results
and this information is used to
continuously improve the planning and
production
processes.
· The minimum stope width used in
longitudinal
stoping is 4 metres. Transverse stopes have
fixed widths of 10 metres (primary
stopes) and 15 metres (secondary stopes).
· The development work of infrastructure for
mining below level 380 is under way.
Infrastructure will include the decline,
access drives, development drives,
ventilation headings/rises and support
headings (such as water sumps).
Electricity, water, ventilation and water
discharge systems are also under
construction. At the moment (May 2014) the
decline is proceeding at level 470 and
level development at levels 350 and 380
will soon be finished. Main areas for level
development at May 2014 are the 410 and 440
levels.
· Reserves are derived only from Measured
and Indicated Resource
categories.
Metallurgica· The Kylylahti mine and Luikonlahti mill
l have been operating since early 2012
factors or processing
assumptions
Kylylahti ore as designed in the 2010
Definitive Feasibility Study; extensive
detail is given in the ASX release dated
23/10/2010.
· The metallurgical process is well
established; 3 stage crushing, rod mill and
pebble mill followed by flotation to
produce copper-gold concentrate and a zinc
concentrate for sale, together with a
low-grade cobalt-nickel concentrate for
storage and a sulphur concentrate for
disposal. The
flowsheet is virtually identical to that
employed at the plant in the past for 15
years of treating similar
ore.
· Metallurgical recoveries are well
established and vary slightly with head
grade on average the recoveries
are:
Copper 92.1%
Gold 74.9%
Zinc 49.0%
· Extensive metallurgical testwork representa
tive of the ore body has been completed over
the 20 years between discovery and
production. Metallurgical domains reflect
the geological domain with massive and
disseminated sulphides.
· There are no deleterious elements.
· Bulk sampling is not applicable, as the
mine is in production.
· The saleable product is a concentrate, not
a mineral.
Environmenta· Mined waste rock will be used in stope back
l fill. Before
stoping and backfilling commenced,
development waste rock has been stored in a
constructed waste rock pile on the surface.
Rain and seepage waters are collected and
treated before being drained into the
environment. When mining advances, the
waste rock pile will be transported
underground into
stope fill.
· Mined ore is trucked 43 kilometres to the L
uikonlahti
mill for processing. Copper-gold and zinc
concentrates are produced for sale and
Co-Ni and Sulphur concentrates are stored
in lined dams for possible sale or further
processing in the future. The final
tailings are non-acid forming and are
stored in the tailings storage facility.
All rain, process and seepage waters are
collected and treated before being drained
to the environment. The exception is a
small amount of leakage from an old pit at
Luikonlahti which is permitted under licence
conditions.
Altona is investigating collection of these w
aters
.
· Both Mine and Mill operate under granted
Environmental
Permits.
Infrastructu· All required infrastructure is in place
re and has been used since production started
at early
2012.
· The processing plant is located 43
kilometres from the
mine.
· Power, water and transportation is
available and already in
use.
· The centre of the municipality of Polvijärv
i
(~5,000 inhabitants) is located only 2
kilometres from the
Kylylahti mine. Additionally the town of Outo
kumpu
and the city of Joensuu are located 20
kilometres and 40 kilometres away from the
mine respectively. Accommodation is readily
available in all these places. The mine has
currently all the workforce needed for full
operation.
· The centre of the village Luikonlahti (~500
inhabitants) is located ~3 kilometres from
the
Luikonlahti mill and the centre of the
municipality of
Kaavi (~3000 inhabitants) is located ~15
kilometres from the processing plant.
Additionally the town of
Outokumpu and the city of Kuopio are located
40 kilometres and 75 kilometres away from
the processing plant respectively.
Accommodation is readily available in these
places. The processing plant has currently
all the workforce needed for full
operation.
Costs · The Kylylahti mine and Luikonlahti mill
have been operating almost two years since
early 2012, processing
Kylylahti ore as designed in the feasibility
study. The experience from production is
used for estimating the capital and
operating
costs.
· Allowances made for the content of
deleterious elements in concentrate
(currently there are no deleterious
elements in the copper-gold concentrates
but cobalt and iron penalties in zinc
concentrates) are based on the agreements
made with the current
customer.
· The long term metal prices used for Ore
Reserve estimation are based on the
companys forecasts and are as
follows:
Copper: 3.00 US$/lb
Gold: 1300 US$/oz
Zinc: 0.85 US$/lb
· The exchange rate used in the study is
based on the companys
forecasts
and is as follows:
Euro/USD: 1.25
· The transportation charges used are based
on the current
contracts.
· The treatment and refining charges and
also penalties (currently none applicable)
are based on the agreements made with the
current
customer.
· The allowances made for royalties payable
(government/private) are based on Finnish
mining legislation. There is no government
royalty payable and only small compensation
payments are made to landowners. Most of
the operations are situated on land owned
by the
company.
Revenue fact· Kylylahti mine and Luikonlahti mill have
ors been operating since early 2012 processing
Kylylahti ore as designed in the feasibility
study. The operating experience and current
agreements with customers are used to
estimate the revenue
factors.
· The metal prices used are based on LME
pricing less various standard deductions
and charges for treatment and refining as
per the agreements made with the current
customer.
Market asses· Altona regularly reviews supply and demand
sment characteristics for copper metal. At the
forward prices assumed,
Altona believes resources are economic.
· Copper is a freely traded commodity on
world
markets.
· Regular copper supply and demand analysis
is available from a variety of sources
(
eg. Merchant banks, trading houses, brokers e
tc
).
· Copper is not an industrial mineral.
Economic · Kylylahti is an operating mine. Operating
costs are based on actual data, not
assumptions.
· Reserves are estimated on the basis of the
net smelter return using long term copper
prices and actual operating cost
data.
Social · The Kylylahti mine and Luikonlahti Mill
are fully permitted and operating
according to those permits. The Company
undertakes various community engagement
activities and sponsorships with local
municipalities.
Other · Risks are those typical of underground
copper mines.
· All necessary legal agreements are in
place and in order.
· All necessary governmental agreements and
licencing requirements are in place and in
order.
Classificati· Reserves have been classified as Proved
on Ore Reserves and Probable Ore Reserves.
Proved Ore Reserves have been derived from
the Measured Resource category and Probable
Ore Reserves from the Indicated Resource
category.
· The Proved Ore Reserves category comprises
Ore Reserves in the Wallaby, Gap and Wombat
orebodies between levels 70 and 380
excluding 180 and 210 level
hangingwall gold rich stopes and
development, 270 and 300 level
hangingwall gold rich stopes and
development, which are included in the
Probable Ore Reserves
category.
· The Probable Ore Reserve category includes
Ore Reserves from level 380 downwards
including also those areas described in the
previous point. Also remaining reserves at
50-level are included in the Probable Ore
Reserves.
· Results appropriately reflect the
Competent Person`s view of the
deposit.
· No Probable Ore Reserves have been derived
from Measured Mineral
Resources.
Audits or re· An external review of the procedures used
views for reserve estimation has been carried out
by
Optiro.
· Above 300 metre level mining
reconciliation information is available
which is constantly internally
reviewed.
· The mine plan on which the reserves are
based on is internally reviewed.
· An external geotechnical study concerning
the transverse
stoping and mine infrastructure in the
Wombat
orebody is currently ongoing.
Discussion · No relative accuracy and confidence level
of work has been
relative done.
accuracy/
confidence · Underground mining information with grade
control data and mill reconciliation data
exists and has been used which increases
the confidence of the reserve
estimates.
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