Skip to main content

AI assistant

Sign in to chat with this filing

The assistant answers questions, extracts KPIs, and summarises risk factors directly from the filing text.

MANUKA RESOURCES LTD. Capital/Financing Update 2023

Aug 23, 2023

65340_rns_2023-08-23_51eb872c-49d2-4e9a-8ab2-cec76bfc0210.pdf

Capital/Financing Update

Open in viewer

Opens in your device viewer

ASX Announcement 24 August 2023 ASX: MKR

==> picture [137 x 37] intentionally omitted <==

360% increase in Mt Boppy Total Gold Resources 80% increase in ‘Measured & Indicated’

Manuka Resources Limited (“ Manuka ” or the “ Company ”) is pleased to release an updated Mineral Resources Estimate at Mt Boppy. Gold production recently recommenced from the Project, initially from the screening of rock and tailings dumps[1] .

Highlights:

  • Mt Boppy Total Gold Resources increased nearly 4 fold, to 160,100ozs grading 2.01g/t Au, including

Measured Resources of 106,850t at 5.25 g/t Au for 18,028 oz gold;

Indicated Resources of 715,088t at 2.54 g/t Au for 58,477 oz gold; and

Inferred Resource of 1,770,335t at 1.47 g/t Au for 83,608 oz gold.

  • Measured & Indicated (M&I) Resources are up ~79% to ~76.5koz grading 3.53g/t

  • First Resource upgrade in over 12 months and incorporates results of recent bulk sampling and screening evaluation of rock dumps & tailings

  • Manuka reasonably expects to convert most of the Inferred Resource to an Indicated Resource category as production continues, as well as add additional ounces to the Inferred Resource

  • Manuka is yet to test Mt Boppy depth extensions which provides scope for continued Resource growth

Dennis Karp , Manuka’s Executive Chairman, commented :

“Mt Boppy has the makings of an exceptional gold asset. Having started life as a listed company with 44koz Au in Resources at Mt Boppy, we have produced >41koz Au (560kt @ 3g/t) and still have slightly more than that in current M&I Resources. To this we have just added another 280koz and we have yet to test our most prospective exploration targets.

With the anticipated cash flow from our gold production we are in a strong position to not only upgrade our Inferred ounces to higher categories but also continue to grow the overall resource.”

1 Dry tails emplacements from historic underground operations

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

Mt Boppy Resource Statement

Mineral resources at Mt Boppy totalling 2,090,423 tonnes at a grade of 1.46 g/t Au for 98,367 oz Au have been delineated through a bulk sampling and screening evaluation of rock and tailings dumps on the property ML’s. These are incremental to the total Mt Boppy Opencut Resource, previously reported to the ASX on 29 July 2022, of 281,850 tonnes at a grade of 4.95 g/t Au for 44,820 ounces, that remain unchanged. The revised total classified Mineral Resources are shown in Table 1.

The mineral resource estimate for Mt Boppy is contained within:

  • in situ rock dumps and tailings depositories, with in situ gold grades derived from bulk sampling material derived from mechanically pitting and trenching to 2-3m depth and screening +200, -200+20, +8-20, and -8mm size fractions, with cone measurements to ascertain mass % distribution and total volume treated.

  • an open cut pit shell that reaches a depth of 215m below surface at the southern end of the Mt Boppy deposit. Resources were reported July 2022 with respect to the current pit design. Material within the pit design is reported at a 1.6 g/t Au cut off and material below the pit design is reported to a 3.0 g/t Au cut off. The open cut is currently flooded and inaccessible for mining. Dewatering and a sidewall pushback is necessary to access and mine these resources.

  • a grade shell modelled at a 1.6 g/t cut off over the Boppy South mineral zone. This prospect still requires final drilling and evaluation before assessing establishing a small opencast.

==> picture [266 x 97] intentionally omitted <==

Table 1 - Mt Boppy Gold Resources at 21 August 2023

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

The previous resource statement from July 2022 is shown in Table 2.

==> picture [270 x 99] intentionally omitted <==

Table 2 - Mt Boppy Gold Resource at 19 May 2022

A summary of the split of the current resources (vis rock dumps, tailings[2] and hard rock opencast) is shown in Table 3.

==> picture [460 x 206] intentionally omitted <==

Table 3 - Mt Boppy Gold Resource by type at 21 August 2023

An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated or Measured Mineral Resource and cannot be converted to an Ore Reserve. It is reasonably expected that most of the Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration.

Based on the study herein reported, delineated mineralization of the Mt Boppy deposits is classified as Measured, Indicated and Inferred resources according to the definitions of the JORC Code (2012) as presented in Error! Reference source not found. . The mineral resource is depleted for the Boppy opencut to the November 30[th] 2021 projected pit pick-up, and treated (screened) material on the Boppy ROM dump as at 21 August 2023.

2 Dry tails emplacements from historic underground operations

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

Rock Dump and Tailings Evaluation

The Company has started producing gold from screening rock dump and tailings material at the Mt Boppy ROM. Bulk sample evaluation has continued and has progressed evaluation of the Mt Boppy Main waste rock dump, the low grade rock dump and tailings at the TSF3 impoundment.

This estimate incorporates rock dump evaluation data compiled since the last mineral resources update 29 July 2022.

The evaluation methodology has enabled assessment of the economic viability of treating screened rock dump fines plus tailings (these have already been subject to milling and cyanidation).

The methodology to date has involved:

  • preliminary hand screening on a 40m grid

  • excavation using a 200mm skeleton bucket of 2-3m deep pits on a 40m grid

  • sub 8mm trommel screening of the sub200mm pile, which evolved to sub12mm trommel screening

  • Triple deck flat screening of sub 200mm piles producing sub10, +10-22, +22-200mm cones

  • Cones of material were sampled for assay every two front end loader buckets processed

  • Backup splits of each size sample were also taken, as well as pulps prior to bottle roll analysis

Table 4 (below) shows the quantum of material evaluated for the various material sources. Over 5,000 tonnes of dump material has been bulk sampled to date.

==> picture [460 x 111] intentionally omitted <==

Table 4 - Mt Boppy Dump Evaluation Material Tested

Figure 1 shows a drone image of the Boppy ROM bulk sampling. The screening operation is centralised, with -8 and +8-20 stockpiles being generated. The work has shown a clear increase of grade in the -8mm fraction. A +8-20mm split is also generated as a low grade stockpile. Figure 2 shows the indicated grades for the various screened sizes for the Mt Boppy ROM.

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

==> picture [423 x 648] intentionally omitted <==

Figure 1: Drone view of Trench evaluation of the Mt Boppy ROM rock dump and tailings

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

==> picture [307 x 222] intentionally omitted <==

Figure 2: Mt Bppy ROM Au g/t vs Screen fraction

Gold analyses have been undertaken on the various size fractions at the Wonawinta Laboratory, with third party checks conducted at Gekko Laboratory (Ballarat) and ALS (Orange). Analyses include systematic bottle roll estimation of gold in solution amenable to cyanidation (AAS), analysis of tails for gold in acid soluble solids (Aqua Regia), combined to give an analysis of total gold in solution. Bottle Roll and Fire Assay checks were also conducted at Gekko.

Table 5 shows the various surface dumps and current resource estimation

==> picture [450 x 295] intentionally omitted <==

Table 5: Mt Boppy surface rock dump and tailings sources and estimated resources

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

Notably the remaining extent of the Mt Boppy Main Waste dump provides an ongoing evaluation target ranging from 101-151 Koz Au at in situ grades estimated to be between 1.28 and 1.56 g/t gold.

*The preceding statements of Mineral Resources conforms to the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code) 2012 Edition. Due to rounding to appropriate significant figures, minor discrepancies may occur. All tonnages reported are dry metric

COMPETENT PERSON’S STATEMENT

The information in this report that relates to Mt Boppy Dump Mineral Resources is based on, and fairly represents, information and supporting documentation prepared by Mr Philip Bentley, who is a Certified Professional by The South African Council for Natural Sciences (SACNASP # 400208/05 ) and is the Chief Geologist employed by Manuka Resources Ltd. Mr Bentley has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is 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 Bentley consents to the inclusion in the statement of the matters based on his information in the form and context in which it appears.

About Manuka

Manuka Resources Limited (ASX: MKR) is an Australian mining and exploration company with key assets located in the Cobar Basin, central west New South Wales. In addition to its recent acquisition of TransTasman Resources Limited owner of the Taranaki VTM Project, it is the 100% owner of two fully permitted mining projects, one gold and one silver, both within the Cobar Basin, which include the following:

  • Gold - Mt Boppy Gold mine, 48-person mine camp and neighbouring tenements, hosting an existing open pit mineral resource[3] and combined ROM, waste and tailings material all of which lend themselves to upgrading through screening. The Company has commenced a screening and gold recovery project, processing the product at its Wonawinta plant. It has confidence the gold from these sources can be extracted profitably and over a period of ~3 years. Manuka also awaits the outcome of its forthcoming exploration program to determine as to whether the future for mining any Mt Boppy extensions will be as an underground or open cast mine.

  • Silver - Wonawinta silver project, with mine, 84 person mine camp, processing plant and neighbouring tenements. Previously renowned as the largest primary producer of silver in Australia, the mine hosts a significant JORC resource[4] . The Wonawinta processing plant has a nameplate capacity of >850,000 tonnes per year (which the Company now sees expanded to >1.0Mt/yr. The Company has recently completed a plant and metallurgical recovery optimisation.

There exists a number of highly prospective base metals exploration targets on Manuka’s ~1,150km[2] tenement package within the Cobar Basin.

3 ASX release 29 July 2022

4 ASX release 1 April 2021

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

The Taranaki VTM Iron Sand Project recently released its maiden vanadium resource[5] which ranks it as one of the largest drilled vanadium projects globally. The Project has a granted mining licence and is in the lowest quartile of the iron ore production cost curve. The Company awaits the reissuance of its Environmental Approval before completing its Bankable Feasibility Study.

==> picture [460 x 232] intentionally omitted <==

This announcement has been approved for release by the chairman of Manuka Resources Limited.

For further information contact: Dennis Karp Media Contact Executive Chairman Ben Henri Manuka Resources Limited M+C Partners 0412 268 114 0473 246 040

Important Information

This report includes forward-looking statements and comments about future events, including the Company’s expectations about the performance of its businesses. Forward-looking words such as “expect”, “should”, “could”, “may”, “predict”, “plan”, “will”, “believe”, “forecast”, “estimate”, “target” or other similar expressions are intended to identify forward-looking statements. Such statements involve known and unknown risks, uncertainties, assumptions and other important factors, many of which are beyond the control of the Company and which may cause actual results, performance or achievements to differ materially from those expressed or implied by such statements. Forward-looking statements are provided as a general guide only, and should not be relied on as an indication or guarantee of future performance. Given these uncertainties, recipients are cautioned to not place undue reliance on any forward-looking statement. Subject to any continuing obligations under applicable law, the Company disclaims any obligation or undertaking to disseminate any updates or revisions to any forward-looking statements in this report to reflect any change in expectations in relation to any forward-looking statements or any change in events, conditions or circumstances on which any such statement is based. No Limited Party or any other person makes any representation, or gives any assurance or guarantee that the occurrence of the events expressed or implied in any forward-looking statements in the report will occur.

5 ASX release 1 March 2023

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

Appendix 1: JORC Code 2012 Edition – Table 1

Section 1 Sampling Techniques and Data

(Criteriain this sectionapplyto allsucceeding sections.) sectionapplyto allsucceeding sections.)
Criteria JORC Code explanation Commentary
Sampling
techniques
Nature and quality of sampling
(eg cut channels, random chips,
or specific specialised industry
standard measurement tools
appropriate to the minerals
under investigation, such as
down hole gamma sondes, or
handheld XRF instruments, etc).
These examples should not be
taken as limiting the broad
meaning of sampling.
Include reference to measures
taken
to
ensure
sample
representivity
and
the
appropriate calibration of any
measurement tools or systems
used.
Aspects of the determination of
mineralisation that are Material
to the Public Report.
In
cases
where
‘industry
standard’ work has been done
this would be relatively simple.
Samples were collected from a variety of methods from three
main phases of drilling: Polymetals (PML, 2002-2015), Black
Oak Minerals (BOK, 2015), MAAS (2016) and Manuka
Resources (MKR, 2020-present).
From historic reports, PML and BOK sampling techniques all
followed industry best practice.
Sampling techniques for RC drilling comprised 1 m reverse
circulation samples, from which 3 kg was pulverised to produce
a 50 g charge for fire assay.
Diamond drill core was cut in half over varying interval lengths
depending on logged geological units and was crushed and
pulverised to produce a 50 g charge for fire assay.
Open hole percussion and blast hole samples collected over
2.5 m intervals sectioned the drill returns and pulverised to
produce a 50g charge for fire assay or 200g charge for bottle
roll leach
Rock and tailings dump samples were collected by mechanical
excavations from 2-3m deep pits excavated on a 40m grid,
followed by trenching joining the pits together. This material
was
screened
initially
through a
rotating
8mm
and
subsequently 12mm trommel. Grade samples were taken from
cones generated from each 2 Front End Loader (FEL) bucket
feeds.
Drilling
techniques
Drill type(eg core, reverse
circulation, open-hole hammer,
rotary air blast, auger, Bangka,
sonic, etc) and details(eg core
diameter, triple or standard tube,
depth of diamond tails, face-
sampling bit or other type,
whether core is oriented and if
so, by what method, etc).
PML and BOK: Diamond (HQ diameter) and RC drilling (5.5
inch face sampling bit), Open hole percussion blasthole drilling
MAAS: RC drilling (5.5 inch face sampling bit)
MKR: RC drilling (5.5 inch face sampling bit), open hole
percussion blasthole drilling
Not applicable to dump evaluation
Drill
sample
recovery
Method
of
recording
and
assessing core and chip sample
recoveries
and
results
assessed.
Measures taken to maximise
sample recovery and ensure
representative nature of the
samples.
Whether a relationship exists
between sample recovery and
grade and whether sample bias
may have occurred due to
preferential
loss/gain
of
fine/coarse material.
No recovery information is available for pre-2011 drilling
For PML and BOK RC drilling from 2011 onwards, recoveries
were recorded by comparing the weight of each metre of
sample to a theoretical sample weight, estimated using the hole
diameter and the degree of weathering. The average recovery
was calculated to be 80%, with no appreciable difference
between weathering domains.
PML and BOK Diamond drilling recoveries were measured and
recorded, with average recoveries of 98% within mineralized
zones. There was no correlation between recovery and gold
grades.
MKR RC drilling did not quantitatively record recovery but RC
piles were qualitatively assessed. Poor to no recovery zones
were commonly associated with historic stopes.
No relationship exists between gold grades and recoveries in
either RC or diamond logging.
Logging Whether core and chip samples
have been geologically and
geotechnically logged to a level
of detail to support appropriate
Mineral Resource estimation,
mining studies and metallurgical
studies.
Whether logging is qualitative or
quantitative in nature. Core (or
costean,
channel,
etc)
photography.
• _The total length andpercentage _
Drill holes were geologically logged to various standards over
the project history. Hardcopy logs are available for historic
drilling.
For post-2011 PML diamond core drilling, core recovery and
RQD data were recorded for the core run intervals, and core
was routinely photographed.
It is unlikely that the historical grade control drilling was logged
geologically. Recent (post-2013, BOK and MKR) grade control
RC and blasthole drilling was logged for the presence of stope
fill.
Dump samples were logged recording date, gps locality,
volume and tonnage of resultant cones. Tonnages were

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

www.manukaresources.com.au

Criteria JORC Code explanation Commentary
of the relevant intersections
logged.
calculated from no of buckets and the FEL calibrated
weightometer.
Sub-sampling
techniques
and
sample
preparation
If core, whether cut or sawn and
whether quarter, half or all core
taken.
If non-core, whether riffled, tube
sampled, rotary split, etc and
whether sampled wet or dry.
For all sample types, the nature,
quality and appropriateness of
the
sample
preparation
technique.
Quality
control
procedures
adopted for all sub-sampling
stages
to
maximise
representivity of samples.
Measures taken to ensure that
the sampling is representative of
the in situ material collected,
including for instance results for
field
duplicate/second-half
sampling.
Whether
sample
sizes
are
appropriate to the grain size of
the material being sampled.
PML Diamond core intervals for sampling were cut in half,
following the orientation line to ensure a consistent side of the
core was sent for assay.
PML and BOK RC samples were split at the rig by cone splitter
at 1 m intervals.
MKR RC samples were split at the rig by a 3 tier riffle splitter at
1 m intervals
BOK and PML blasthole grade control samples were split at the
rig by a 3-tier riffle splitter.
MKR blasthole samples were collected by quartering of the
blasthole cuttings cone.
MKR Field duplicate results for RC data showed > 87% above
0.1g/t Au within ± 40%.
Laboratory duplicate results for RC and diamond core samples
for PML, BOK and MKR showed >95% of data within ±15%,
with no appreciable difference between drilling phases.
Drilling muds and bit shrouds were used to improve recovery.
Gold is finely disseminated and associated with sulphides in
quartz veins and the RC sub-sample size is considered
appropriate. Drill chips dried and pulverised to a nominal 90%
passing 75 µm screen before further sub sampling at the
laboratory.
Quality
of
assay
data
and
laboratory
tests
The
nature,
quality
and
appropriateness of the assaying
and laboratory procedures used
and whether the technique is
considered partial or total.
For
geophysical
tools,
spectrometers, handheld XRF
instruments, etc, the parameters
used in determining the analysis
including instrument make and
model,
reading
times,
calibrations factors applied and
their derivation, etc.
Nature
of
quality
control
procedures
adopted
(eg
standards, blanks, duplicates,
external laboratory checks) and
whether acceptable levels of
accuracy (ie lack of bias) and
precision
have
been
established.
PML, BOK, MAAS and MKR RC samples were analysed at ALS
Laboratories Orange using Fire Assay with a 50g charge. Fire
Assay is considered a ‘total’ technique for non-coarse gold.
Blank and standard samples were included in batches sent to
ALS at a rate of 1 standard and one blank for every 30 routine
samples. No issues were noted with blank and standard
analysis.
ALS laboratories undertake internal QC checks including
standards, blanks and duplicates.
Some BOK and MKR blasts hole grade control samples were
analysed by 200 g bottle roll leach with AAS finish. A series of
BOK duplicates were analysed by both fire assay and bottle roll
leach to determine an average leach recovery.
Wonawinta Laboratory undertook bottle roll analyses (AAS and
Aqua Regia) of the various size fractions. Duplicate samples
and duplicate pulps were periodically submitted for check bottle
roll and fire assay analysis at Gekko Laboratory (Ballarat).
Acceptable levels of accuracy or reproduceability of analyses
were irregular (not always achieved) probably due to localized
nugget effect of the dump mineralization. A project Certified
reference sample is being created for future QAQC.
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.
Two PML RC holes were twinned with diamond core holes.
Analyses of twinned RC and diamond holes showed a very
close match between grade and length of intersected
mineralization.
No recent MKR RC drill holes have been twinned with diamond
The bulk sampling was utilized to reduce potential nugget
effects in the feed material. Dupicate splits of pulverized
material prior to bottle roll analysis were also taken, and
checked at Gekko Lab. Fairly erratic correlation suggests
possibility of nugget effect of gold deportment in screened
material.
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.
Drill hole collars were located by either Total Station or
differential GPS (DGPS) surveys to a high degree of accuracy
using the Map Grid of Australia zone 55 coordinate system.
Down hole surveys were collected Reflex magnetic single
system at 30 m intervals.
Some RC grade control and other drill holes were unable to be
surveyed due to hole collapse during or after drilling.
Topographic control is via a triangulated wireframe surface

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

www.manukaresources.com.au

Criteria JORC Code explanation Commentary
Quality
and
adequacy
of
topographic control.
derived from an aerial photogrammetry survey as well as Total
station surveys of the pit.
Topographic control is considered adequate given the relatively
subdued relief in the resource area.
All dump samples were located using a handheld GPS.
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.
Drilling was undertaken on a nominal 10-12.5 m (along strike)
by 20 m grid throughout the majority of the Resource as well as
closely spaced grade control drilling (2.5 m x 3 m ).
The data spacing and distribution is sufficient to establish the
degree of geological and grade continuity appropriate for
estimation by Ordinary Kriging and the classifications of
Measured, Indicated and Inferred Resources.
RC and diamond core samples were composited over 2 m and
grade control holes over 2.5 m to minimize sample splitting.
Dump sampling was initially conducted on pits 40m apart, then
followed up with trenches that joined the pits together. No
compositing was undertaken.
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.
Mineralisation is controlled by steeply west dipping vein
structures.
PML, BOK and MKR surface RC and diamond drilling is
generally at high angles to the gold mineralisation, drilled
towards the east at 50°-70°, several recent (2021) MKR holes
had to be drilled from the west due to wall stability issues.
MKR in-pit grade control RC drilling was completed using a
variety of drill hole orientations due to access and space
constraints on the pit floor, with vertical holes avoided where
possible.
All blast hole grade control holes are vertical, however the
greater density of this sampling reduces the chances of
introducing bias.
Not applicable to dump sampling
Sample
security
The measures taken to ensure
sample security.
BOK and MKR sampling was supervised by a company
representative up to the point of dispatch to ALS laboratories
using a local freight company.
Samples dispatched by MKR to ALS in Orange were bagged in
larger polyweave sacks secured with zip ties and delivered by
a local freight company. Sample numbers received by ALS
were checked again dispatched numbers.
Samples dispatched by MKR to Gekko in Ballarat were bagged
in larger polyweave sacks secured with zip ties and delivered
by a local freight company. Sample numbers received by
Gekko were checked again dispatched numbers.
Audits
or
reviews
The results of any audits or
reviews of sampling techniques
_and data. _
No audits/reviews of sampling techniques and data have been
undertaken on any drill programs or the dump evaluation.

Section 2 Reporting of Exploration Results

(Criteria listed in the preceding section also apply to this section.)

Criteria **JORC Code explanation ** Commentary
Mineral
tenement and
land
tenure
status

Type, reference name/number,
location and ownership
including agreements or
material issues with third
parties such as joint ventures,
partnerships, overriding
royalties, native title interests,
historical sites, wilderness or
national park and
environmental settings.
ML1681, ML311, MPL 240, GL 3255, GL 5836, GL 5848, and
GL5898 and exploration licence EL 5842 are all held by Mt
Boppy Resources Pty Ltd. (wholly owned by MKR)
The property on which the Mount Boppy mine situated is Crown
Land.
A Native Title Agreement is in place with the traditional owners.
The Company notes that no land within the licence area may be
classified as sensitive land. No further approvals other than
those required under the Mining Act 1992 are required.

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

www.manukaresources.com.au

Criteria **JORC Code explanation ** Commentary

The security of the tenure held
at the time of reporting along
with any known impediments
to obtaining a licence to
operate in the area.
Exploration
done by other
parties

Acknowledgment and
appraisal of exploration by
other parties.
The deposit was first discovered in 1896 and mined by
underground methods up to 1923.
Various companies (notably PML, Golden Cross and BOK)
have conducted exploration activities around Mt Boppy since
the 1960s, with treatment of tailings and open pit mining up until
2015, and MKR more recently open pit mining 2020-Nov 2021.
Geology
Deposit type, geological
setting and style of
mineralisation.
The Mount Boppy deposit is located in the northern part of
Devonian Canbelego-Mineral Hill Rift Zone, flanked by the
Kopyje Shelf, on the far eastern side of the Cobar Basin.
Mineralisation occurs in brecciated and silicified sediments and
quartz veining developed along a west-dipping fault that down-
throws Devonian aged Baledmund Formation rocks on its
western side against Orodovician age Girilambone Group rocks
on it eastern side.
The higher grades tend to lie in the hanging wall rocks
(Baledmund Formation) on the western side of the Main Lode
where the dip shallows.
The Main Lode strikes approximately north-south and dips at
approximately 70-80° west.
Historical underground workings were supported with timber
and back-filled with tailings sands from processing. Sand fill
samples grade between 0.05 g/t Au and 38 g/t Au with an
average of 3.5 g/t Au.
Mineralisation is predominantly gold, associated with grey
quartz veins and minor pyrite.
Drill
hole
Information

A summary of all information
material to the understanding
of the exploration results
including a tabulation of the
following information for all
Material drill holes:
o easting and northing of the
drill hole collar
o elevation or RL (Reduced
Level – elevation above
sea level in metres) of the
drill hole collar
o dip and azimuth of the hole
o down hole length and
interception depth
o hole length.
Resources are the penultimate result of an exploration work
programme.
All drill holes were considered in the definition of the resources.
Drill hole data is stored in the Manuka Drillhole Database off site
(EarthSQL), Data is managed by Manuka staff.
Not applicable to Dump evaluation.
Data
aggregation
methods

In reporting Exploration
Results, weighting averaging
techniques, maximum and/or
minimum grade truncations(eg
cutting of high grades) and cut-
off grades are usually Material
and should be stated.

Where aggregate intercepts
incorporate short lengths of
high grade results and longer
lengths of low grade results,
the procedure used for such
aggregation should be stated
and some typical examples of
such aggregations should be
shown in detail.

The assumptions used for any
reporting of metal equivalent
values should be clearly
Samples are generally taken over one metre lengths, all
samples are composited to two metre lengths for estimation.
Grade capping is assessed on a domain basis and applied to
individual composites
No minimum sample cuts were applied to drill hole data
Dump grade assays were top cut at 95% confidence.
Dump grades were weighted against mass and averaged

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

www.manukaresources.com.au

Criteria **JORC Code explanation ** Commentary
stated.
Relationship
between
mineralisatio
n widths and
intercept
lengths

These relationships are
particularly important in the
reporting of Exploration
Results.

If the geometry of the
mineralisation with respect to
the drill hole angle is known,
its nature should be reported.

If it is not known and only the
down hole lengths are
reported, there should be a
clear statement to this effect
(eg ‘down hole length, true
width not known’).
Shoots have long been recognised within the Mt Boppy ore
body. There is a no correlation between thickness (true or
downhole) and gold grades.
Generally true thickness is approximately 70% to 80% of the
down hole drill intercept widths.
3D wireframes used to define mineralisation mitigate the
difference between drill hole intercepts and true widths.
Not applicable to dump evaluation
Diagrams
Appropriate maps and
sections (with scales) and
tabulations of intercepts
should be included for any
significant discovery being
reported These should include,
but not be limited to a plan
view of drill hole collar
locations and appropriate
sectional views.

Images and graphs are provided in the body of the Statement
Balanced
reporting

Where comprehensive
reporting of all Exploration
Results is not practicable,
representative reporting of
both low and high grades
and/or widths should be
practiced to avoid misleading
reporting of Exploration
Results.
All drill holes were used in the interpretate the location and
thickness of the mineralised halo.
Reasonable prospects for economic extraction are considered
when reporting resources
Other
substantive
exploration
data

Other exploration data, if
meaningful and material,
should be reported including
(but not limited to): geological
observations; geophysical
survey results; geochemical
survey results; bulk samples –
size and method of treatment;
metallurgical test results; bulk
density, groundwater,
geotechnical and rock
characteristics; potential
deleterious or contaminating
substances.
Geological Mapping (lithology and structure), historic workings
and drill holes were used to aid the interpretation of
mineralisation at Mt Boppy.
Mt Boppy ore was processed until February 2022 at MKR’s
Wonawinta plant, which uses a carbon-in-leach (CIL) process
to extract gold, generally achieving recoveries of between 75%
and 80%.
Dump sampling has been described above, and was based on
systematic multiple approximate 5-10t FEL samples derived
from mechanically excavated material.
Densities for dump material were derived from a FEL
weightometer
Further work
The nature and scale of
planned further work (eg tests
for lateral extensions or depth
extensions or large-scale step-
out drilling).

Diagrams clearly highlighting
the areas of possible
extensions, including the main
geological interpretations and
future drilling areas, provided
this information is not
commercially sensitive.
There is scope for further definition of high grades that extend
below the current planned pit floor. Note this area is currently
classified as indicated.
Dump bulk sampling will continue on the Mt Boppy Main Waste
dump. Material will be systematically bulk sampled (as
described using a mobile triple deck flat screen) as the mining
faces and / or level progress.

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

Section 3 Estimation and Reporting of Mineral Resources

Section 3 Estimation and Reporting of Mineral Resources Section 3 Estimation and Reporting of Mineral Resources Section 3 Estimation and Reporting of Mineral Resources Section 3 Estimation and Reporting of Mineral Resources
(Criteria listedinsection 1,and whererelevant insection 2,alsoapplytothis section.)
Criteria **JORC Code explanation ** Commentary
Database
integrity

Measures taken to ensure that data
has not been corrupted by, for
example, transcription or keying
errors, between its initial collection
and its use for Mineral Resource
estimation purposes.

Data validation procedures used.
MA was provided with an export of the current MKR
drill hole database
The database contained tables for Collar details and
metadata, downhole surveys, assays, lithology,
alteration, core recoveries, veins, minerals and
oriented structures.
MS Access queries were used to perform basic
validation checks, and holes were then loaded into
Surpac for a second round of validation, hole lengths,
sample lengths, down hole survey errors.
Site visits
Comment on any site visits
undertaken by the Competent Person
and the outcome of those visits.

If no site visits have been undertaken
indicate why this is the case.
Phil Bentley is the Chief Geologist for Manuka
Resources and visits the site 2 weeks per month.
Geological
interpretation

Confidence in (or conversely, the
uncertainty of ) the geological
interpretation of the mineral deposit.

Nature of the data used and of any
assumptions made.

The effect, if any, of alternative
interpretations on Mineral Resource
estimation.

The use of geology in guiding and
controlling Mineral Resource
estimation.

The factors affecting continuity both of
grade and geology.
Geological and mineralisation interpretation was
carried out on approximately 10 m spaced sections,
oriented perpendicular to the strike of mineralization.
Mineralisation was modelled as a single domain above
1 g/t Au, which represents a clear natural break in
grade statistics.
Intercepts of lesser grade were included where
necessary to aid continuity.
The mineralised domain surrounds the 3D shapes
modelled to represent historic underground workings.
Historic workings outlines were derived from old mine
plans and drill hole logging.
Historic underground workings are generally filled with
tailings material and timber supports.
Drill hole logging and sampling, surface mapping and
grade control blast hole sampling were all used to help
build the geological and mineralisation model to a high
degree of confidence.
Mineralisation displayed very good continuity between
sections.
Not applicable to dump evaluation
Dimensions
The extent and variability of the
Mineral Resource expressed as
length (along strike or otherwise),
plan width, and depth below surface
to the upper and lower limits of the
Mineral Resource.
The Mineral Resource has a strike length of 455 m and
a maximum depth below surface of 230 m. The
horizontal width of combined mineralised domains
averages 60 m near surface, where the western lode
peters out, the main lode maintains approximately 10 -
12 m width.
Mineralisation dips 85° to the west.
Rock and tailings dumps have been surveyed using
Drone imagery and GPS coordination, and then
modelled in Micromine.
Estimation
and modelling
techniques

The nature and appropriateness of
the estimation technique(s) applied
and key assumptions, including
treatment of extreme grade values,
domaining, interpolation parameters
and maximum distance of
extrapolation from data points. If a
computer assisted estimation method
was chosen include a description of
computer software and parameters
used.

The availability of check estimates,
previous estimates and/or mine
production records and whether the
Mineral Resource estimate takes
appropriate account of such data.
Estimation of hard rock resources was carried out in
Surpac 7.5.
Statistical analyses was carried out on composite
samples from mineralization within the domains to
establish declustered means, top cuts and spatial
variability (Variography).
Directional variography indicated differences in spatial
anisotropy between the northern and southern parts of
the deposit, divided by an interpreted cross-structure
striking northwest.
Gold grades were estimated by Ordinary Kriging (OK)
interpolation methods into a Surpac block model with
parent block dimensions of 10 m (along strike) by 5 m
(across strike) by 5 m (vertical).
The parent block size is approximately equal to the
sample separation distance withinthe pit and

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

www.manukaresources.com.au

Criteria **JORC Code explanation ** **JORC Code explanation ** Commentary

The assumptions made regarding
recovery of by-products.

Estimation of deleterious elements or
other non-grade variables of
economic significance (eg sulphur for
acid mine drainage characterisation).

In the case of block model
interpolation, the block size in relation
to the average sample spacing and
the search employed.

Any assumptions behind modelling of
selective mining units.

Any assumptions about correlation
between variables.

Description of how the geological
interpretation was used to control the
resource estimates.

Discussion of basis for using or not
using grade cutting or capping.

The process of validation, the
checking process used, the
comparison of model data to drill hole
data, and use of reconciliation data if
available.
approximately half the sample separation distance
below the pit. The parent blocks were sub-celled to
1.25 m (along strike) by 0.625 m (across strike) by
0.625 m (vertical) for volume resolution.
All estimates were made into parent blocks. Blocks
were filled using two estimation passes, with an
increasing search radius and decreasing minimum
number of samples. Details are given in the report.
Search ellipse directions and anisotropy were aligned
with variography results.
Domain boundaries were treated as hard boundaries
(stopes and lodes), stope grade were estimated
though a final decision to use a historic fixed grade (3.6
g/t) to all stope material was applied.
The estimates were validated by visual inspection of
block grades and drill hole data, comparison of
alternate estimation methods
Estimation for rock and tailings dumps was effected on
a polygonal basis using weighted averages for grade
estimation
Moisture
Whether the tonnages are estimated
on a dry basis or with natural
moisture, and the method of
_determination of the moisture content. _
Tonnages are based on dry tonnes.
Cut-off
parameters

The basis of the adopted cut-off
grade(s) or quality parameters
applied.
Cut-off grades applied according to potential mining and
processing methods. A cut-off grade of 1.6 g/t was used
for material within the designed open pit, based on
current production. Resources below the pit are reported
to a 3.0 g/t Au cut off, to reflect higher mining costs
associated with underground mining methods.
Mining factors
or
assumptions

Assumptions made regarding
possible mining methods, minimum
mining dimensions and internal (or, if
applicable, external) mining dilution. It
is always necessary as part of the
process of determining reasonable
prospects for eventual economic
extraction to consider potential mining
methods, but the assumptions made
regarding mining methods and
parameters when estimating Mineral
Resources may not always be
rigorous. Where this is the case, this
should be reported with an
explanation of the basis of the mining
assumptions made.
The current mineral resource does not include any
dilution or ore loss associated with practical mining
constraints.
Metallurgical
factors
or
assumptions

The basis for assumptions or
predictions regarding metallurgical
amenability. It is always necessary as
part of the process of determining
reasonable prospects for eventual
economic extraction to consider
potential metallurgical methods, but
the assumptions regarding
metallurgical treatment processes and
parameters made when reporting
Mineral Resources may not always be
rigorous. Where this is the case, this
should be reported with an
explanation of the basis of the
metallurgical assumptions made.
Metallurgical test work and previous processing
operations indicate recoveries of around 78% for CIL.
Metallurgical recoveries average 75.3%, based on an
aqua regia determined head grade at the plant.
Average recovery for February 2022 were 80.6%.
Similar recoveries as above are forecast to being
achieved on screened rock and tailings material

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

www.manukaresources.com.au

Criteria **JORC Code explanation ** **JORC Code explanation ** Commentary
Environmental
factors
or
assumptions

Assumptions made regarding
possible waste and process residue
disposal options. It is always
necessary as part of the process of
determining reasonable prospects for
eventual economic extraction to
consider the potential environmental
impacts of the mining and processing
operation. While at this stage the
determination of potential
environmental impacts, particularly for
a greenfields project, may not always
be well advanced, the status of early
consideration of these potential
environmental impacts should be
reported. Where these aspects have
not been considered this should be
reported with an explanation of the
environmental assumptions made.
The project is located within existing mining leases
The Annual Rehabilitation Reports (to July 2023) for
Mt Boppy have been finalised and submitted to the
regulator.
No specific issues beyond normal requirements for
open pit mining in NSW
Bulk density
Whether assumed or determined. If
assumed, the basis for the
assumptions. If determined, the
method used, whether wet or dry, the
frequency of the measurements, the
nature, size and representativeness
of the samples.

The bulk density for bulk material
must have been measured by
methods that adequately account for
void spaces (vugs, porosity, etc),
moisture and differences between
rock and alteration zones within the
deposit.

Discuss assumptions for bulk density
estimates used in the evaluation
process of the different materials.
Bulk density values used for conversion of block model
volumes to tonnages were derived from 1,306 core
sample
density
measurements
using
water
displacement methods. No density readings by MKR
have been undertaken.
Density was assigned to the block model based on
weathering domain; 2.4 t/m3 for oxide, 2.68 t/m3 for
transitional and 2.77 t/m3 for fresh material.
Weathering domains were defined by drill hole logging
for the oxide/transitional boundary and an RL of 175 m
for the transitional/fresh boundary.
Stope fill was assigned a density value 1.5 t/m3 based
on a density of 1.8 t/m3 and_⅙_th of the stopes
assumed to be voids. Level drives are assumed to be
open, not back filled. This figure is considered a
representative based on recent mining and haulage
experience.
No correlation was observed between grade and
density.
Rock and tailings dump densities are based on
calibrated FEL weightometer
Classification
The basis for the classification of the
Mineral Resources into varying
confidence categories.

Whether appropriate account has
been taken of all relevant factors (ie
relative confidence in tonnage/grade
estimations, reliability of input data,
confidence in continuity of geology
and metal values, quality, quantity
and distribution of the data).

Whether the result appropriately
reflects the Competent Person’s view
of the deposit.
Resources were classified according to the number of
samples used, distance to samples and estimation
confidence statistics:
relative confidence in tonnage and grade estimates
are reflected in the resource classification, Input data
quality, quantity and distribution is considered
appropriate for use in resource estimation.
The understanding and confidence in the geology
model is robust and has been tested with drilling.
Resource categories Measured, Indicated and Inferred
were assigned to the resource reflecting the
Competent Persons view of the deposit
Dump classifications were assigned on the quantum of
bulk sampling and statistical normalization of the
sampling.
Audits
or
reviews

The results of any audits or reviews of
Mineral Resource estimates.
No external audits or reviews of the resource estimate
have been carried out to date.
Discussion of
relative
accuracy/
confidence

Where appropriate a statement of the
relative accuracy and confidence level
in the Mineral Resource estimate
using an approach or procedure
deemed appropriate by the
Competent Person. For example, the
application of statistical or
geostatisticalprocedures toquantify
A
combination
of
data
spacing,
geological
understanding and the application geostatistical
procedures to quantify the relative accuracy of the
resource where considered when applying Resource
confidence levels.
The interpretations of geology and mineralisation are
well constrained and support high confidence in the
estimate.
Measured
resources
are
considered

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au

www.manukaresources.com.au

Criteria **JORC Code explanation ** **JORC Code explanation ** Commentary
the relative accuracy of the resource
within stated confidence limits, or, if
such an approach is not deemed
appropriate, a qualitative discussion
of the factors that could affect the
relative accuracy and confidence of
the estimate.

The statement should specify whether
it relates to global or local estimates,
and, if local, state the relevant
tonnages, which should be relevant to
technical and economic evaluation.
Documentation should include
assumptions made and the
procedures used.

These statements of relative accuracy
and confidence of the estimate should
be compared with production data,
where available.
representative of local tonnes and grade. Grade
control drilling and pit mapping has informed the
measured resource areas. Indicated and inferred
resources are considered representative of the global
tonnes and grade contained within the area of the
deposit tested by diamond and RC drilling
The deposit was mined by MKR between June 2020
and November 2021. Reconciliation to mill production
is provided in the body of the report.
Dump resources are considered representative of the
tonnes and grade contained within the area of the
deposit tested by bulk sampling.
The recent commencement of gold production from
screened products of these resources will provide
ongoing accuracy through reconciliations of gold
produced vs material processed.

Section 4 Estimation and Reporting of Ore Reserves

(Criteria listed in section 1, and where relevant in sections 2 and 3, also apply to this section.) No Reserves are reported at this time.

Manuka Resources Limited - Level 4 Grafton Bond Building, 201 Kent St Sydney NSW Australia 2000 ABN 80 611 963 225 Tel 02- 7253 2020 www.manukaresources.com.au