Flushing Meadows RC Pre-Collar Delivers 20m @ 1.7g/t Au
Released
Released
Announcement PDF
Contact Us
A: Suite 1, Level 3, 1138 Hay Street,
West Perth WA 6005
T: +61 (0)8 9389 9021
E: yandal@yandalresources.com.au
yandalresources.com.au | ASX:YRL
Board and Management
Chris Oorschot Managing Director/CEO
Greg Evans Non-Exec Chair
Katina Law Non-Exec Director
Chris Newman Non-Exec Director
Greg Fitzgerald Company Secretary
Flushing Meadows RC Pre-collar Intercepts Broad and
Shallow Oxide Gold Mineralisation
Flushing Meadows RC Pre-collar Highlights
• Yandal has received assay results from all eight RC pre-collars completed
across the Flushing Meadows deposit ahead of the deeper diamond drilling
program.
• Significant Intercepts from the RC pre-collars, all located outside of the
current Mineral Resource, include:
• 20m @ 1.7g/t Au from 55m in 26IWBRC0098DA (ETW*1 18m), including
1m @ 3.5g/t Au from 55m,
9m @ 2.7g/t Au from 64m
o 2m @ 3.3g/t Au from 4m in 26IWBRC0099D, including
1m @ 5.8g/t Au from 6m, and
o 13m @ 0.4g/t Au from 95m in 26IWBRC0097D (ETW*1 9m)
• The wide, shallow oxide gold intercept from 26IWBRC0098DA is located
outside of the Flushing Meadows Mineral Resource Estimate (MRE) and
remains untested to the south and at depth.
• The delineation of shallow, broadly parallel mineralisation would provide a
strong opportunity to build on the current 268koz Flushing Meadows MRE
• Follow-up RC drilling will be scheduled for late June or early July
Flushing Meadows Diamond Drilling
• Seven of the eight diamond holes drilled have been completed below the
shallow Flushing Meadows 268koz MRE. Assay results from the first diamond
hole are expected soon.
ASX Announcement
15 June 2026
*1 ETW - Estimated True Width
For further information or to ask questions in response to this announcement, please
visit our Investor Hub at https://yandalresources.com.au/link/epzwXP
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Commenting on the Flushing Meadows drilling results, Yandal Resources’
Managing Director, Mr. Chris Oorschot, said: “The result from 26IWBRC0098DA
provides the first evidence of additional mineralised structures outside of the
footprint of the current Flushing Meadows deposit. The shallow, broad nature
of the oxide intercept demonstrates the potential for further exploration to build
on the 268koz Mineral Resource.
With seven of the eight diamond holes completed, we are looking forward to
the result from the first diamond hole 26IWBRC0095D.”
Yandal Resources Ltd (ASX: YRL, “Yandal Resources” or the “Company”) is pleased to
provide an exploration update for the Flushing Meadows deposit within the Ironstone
Well-Barwidgee Gold Project (see Figures 4 and 5).
The drilling program across Flushing Meadows commenced with the completion of RC
pre-collars down to fresh rock ahead of diamond core drilling. Assays from all eight RC
pre-collars have been received, with several significant intercepts demonstrating
potential for additional mineralisation to the east (or in the hanging wall of) the current
268koz MRE (see Figures 1, 2 and 3). These positive results follow observations from
diamond hole 26IWBRC0095D that demonstrated multiple parallel structures both above
and below (in the footwall and hanging wall of) the targeted Flushing Meadows
structures (see ASX release 9 June 2026 and Figure 2).
Yandal Resources is awaiting assays from the first diamond hole, 26IWBRC0095D;
however, the reported RC results provide early evidence of potential parallel
mineralisation. Based on geological interpretations, including recently acquired infill
ground gravity data, the intercept from 26IWBRC0098DA is interpreted to be open to the
south and at depth. Further drilling is needed to understand how the intercept relates to
drilling completed to the north, with the closest hole along strike being 26IWBRC0099D,
which also intersected shallow gold mineralisation.
Currently seven of the eight 200m spaced diamond holes have been completed at
Flushing Meadows below the 268koz Mineral Resource Estimate (MRE). This includes
1,015m of RC pre-collars and ~2,000m of diamond drilling. The drilling program at Flushing
Meadows commenced in late April and was designed to assess the continuity of
mineralisation below the shallow MRE, which strikes for over 1.9km at surface.
In addition to diamond drilling, a broad (800m spaced lines)10,000m air-core drilling
program is underway across the Flushing Meadows and Giedi Prime target area.
yandalresources.com.au | ASX:YRL 3
Figure 1: 10,125mN cross-section showing logged structures from 26IWBRC0098DA. The section location is
shown in Figure 3. The section shows all drilling within +/- 12.5m of the section plane.
yandalresources.com.au | ASX:YRL 4
Flushing Meadows RC Drilling
The Flushing Meadows framework diamond drilling program commenced in late April. The
program will see eight 200m-spaced diamond holes completed below the current Flushing
Meadows MRE, covering 1.6 km of strike (See ASX release 4 November 2020). Diamond drilling is
targeting down-dip intercepts, approximately 100m below the fresh rock boundary.
The key aims of the framework program included:
• Completing the first effective and systematic test of primary fresh rock mineralisation
across the Flushing Meadows deposit,
• Assess the potential for high-grade mineralisation within fresh rock, and
• Identify key stratigraphic, intrusive and structural controls on mineralisation to inform a
preliminary geological model.
Results from eight RC pre-collars spaced approximately 200m along strike, to support this deeper
diamond program, have been received (see Tables 3 and 4). Significant intercepts from the RC
drilling include:
• 20m @ 1.7g/t Au from 55m in 26IWBRC0098DA (ETW*1 18m), including
o 1m @ 3.5g/t Au from 55m,
o 9m @ 2.7g/t Au from 64m
• 5m @ 0.8 g/t Au from 113m in 26IWBRC0098DA (ETW*1 4m), including
o 1m @ 3.0g.t Au from 115m
• 2m @ 3.3g/t Au from 4m in 26IWBRC0099D, including
o 1m @ 5.8g/t Au from 6m
• 13m @ 0.4g/t Au from 95m in 26IWBRC0097D (ETW*1 9m), and
• 2m @ 0.9g/t Au from 112m in 26IWBRC0097D
The two significant intercepts from 26IWBRC0098DA bound a thick partially weathered porphyry
intrusion (see Figure 1).
The result from the RC pre-collar of 26IWBRC0098DA presents the first indication of mineralised
structures outside of the current footprint of the Flushing Meadows MRE. The broad and shallow
oxide intercept is open to the south and at depth. The closest drilling to the north is another pre-
collar, 26IWBRC0099D, that intercepted 2m @ 3.3g/t from 4m, located approximately 200m to the
north-northwest (see Figure 3). Further drilling is needed to understand how the intercept relates
to drilling completed to the north. Given the heavily weathered nature of the intercept in
26IWBRC0098DA, supergene enrichment cannot be ruled out until a fresh-rock intercept is
completed below the 20m @ 1.7g/t Au intercept. Follow-up RC drilling will be scheduled for late
June or early July.
yandalresources.com.au | ASX:YRL 5
Seven of the eight diamond holes have now been completed (see Figure 3), with all seven holes
successfully intercepting the interpreted down-dip Flushing Meadows mineralised structures.
Significantly, numerous additional structures of interest have also been identified in both the
hanging-wall and footwall of the known mineralised trend (see Figure 2).
The first diamond core results from 26IWBRC0095D are anticipated soon, with the remaining
diamond core results expected throughout July.
Figure 2: 10,525mN cross-section showing logged structures from 26IWBRC0095D. The section
location is shown in Figure 3. The section shows all drilling within +/- 50m of the section plane. See
ASX release 9 June 2026 for a geological summary of each interval of interest noted in the cross-
section.
Cross-Section
10,525mN
northwest facing
Surface
BOCO
TOFR
< Start of diamond core
Target
Structures
Parallel Structures
of Interest
Parallel Structures
of Interest
Assays
Pending
yandalresources.com.au | ASX:YRL 6
Figure 3: Flushing Meadows collar plan overlaid on a ground gravity image (BA267 1VD linear colour
scale, with northeast shading). All Yandal drilling is plotted, with only effective (>20m down-hole depth)
historic drilling displayed. Collars are thematically coloured by max Au (g/t) in the hole. The section lines
for Figures 1 and 2 are also displayed. The diagram shows that previous drilling has been very limited in
effectiveness around the current MRE, particularly to the east and southeast.
Flushing
Meadows
268koz MRE
500m
< 26IWBRC0090D
< 26IWBRC0096DA
26IWBRC0099D
RC Pre-Collar
2m @ 3.2g/t Au
Awaiting Results from
Diamond Core
26IWBRC0098DA
RC Pre-Collar
20m @ 1.7g/t Au
Incl. 9m @ 2.7g/t Au
Awaiting Results from
Diamond Core
< 26IWBRC0094D
26IWBRC0097D
RC Pre-Collar
13m @ 0.4g/t Au
Awaiting Results from
Diamond Core
< 26IWBRC0092D
< 26IWBRC0095D
Surface
Projection of
Parallel
Mineralisation
yandalresources.com.au | ASX:YRL 7
Next Steps and Looking Ahead
The active exploration programs across the IWB Gold Project are progressing well, and the
Company maintains a strong cash position as it pursues its busy exploration schedule into CY
2026.
The notable near-term activities from the planned circa 10km RC, 5km DD, and 15km AC
drilling programs (see Table 1 below for schedule) include;
Arrakis Discovery
• RC drilling assay results targeting the southeast extension of the Arrakis structure.
• Additional assay results from targeted RC drilling to define the scale and
geometry of higher-grade mineralisation across the recent gold discovery.
• First assay results from diamond drilling designed to assess the depth continuity
of higher-grade mineralisation.
Flushing Meadows (MRE 268koz @ 1.1g/t Au, see Table 2)
• Core samples from diamond hole 26IWBRC0095D have been dispatched to the
lab and prioritised, with results expected soon.
• Completion of the Diamond drilling program with results from further diamond
holes anticipated through July.
• Air-core drilling has commenced over the broader Flushing Meadows and
parallel Giedi Prime target area with first results expected late July.
New England Granite Target Area
• Drilling of the high-grade target (6m @ 6.3g/t Au from 36m, including 2m @
18.2g/t from 36m) identified at the Salusa prospect will recommence in June.
• Assay results from the Siona oxide RC drilling program are anticipated in the
coming weeks.
• Further air-core drilling across the western side of the New England Granite
target area will commence pending final heritage clearance.
yandalresources.com.au | ASX:YRL 8
Table 1: Proposed indicative exploration schedule for the six-month period to September 2026.
Authorised by the board of Yandal Resources
Chris Oorschot
Managing Director
Yandal Resources Limited
yandal@yandalresources.com.au
Lucas Robinson
Corporate Storytime
+61 408 228 889
lucas@corporatestorytime.com
yandalresources.com.au | ASX:YRL 9
About Yandal Resources Limited
Yandal Resources has a portfolio of advanced gold exploration projects in the highly prospective Yandal
and Norseman-Wiluna Greenstone Belts of Western Australia.
Ironstone Well-Barwidgee Gold Project
The 100% owned Ironstone Well-Barwidgee (IWB) Gold Project covers approximately 370km² of highly
prospective and under-explored tenure located between the Jundee and Bronzewing mines in the
northern Yandal Greenstone Belt. Yandal has an established Resource of 268,000oz of gold at Flushing
Meadows (within IBW) and considers there to be strong potential to make new discoveries and expand
this resource base within its extensive tenure holding. (Refer to the ASX announcement of 4 November
2020 for details of the Flushing Meadows Resource).
The IWB project area also includes two new gold discoveries, the Arrakis and Siona Prospects, both made
within the last twelve months. These outcomes were driven by the execution of a targeted exploration
program that followed a systematic, geologically driven strategy that was developed in early 2023. The
Arrakis prospect is hosted within the Caladan fold, and the Siona prospect is hosted within the New
England Granite.
Both discoveries are currently at an early stage but progressing well, with future activities focused on
delineating the scale of each of the newly defined mineralised systems.
The IWB Gold Project also includes several advanced prospects, where limited historic and YRL drilling has
returned robust gold intercepts, indicating the potential for shallow oxide mineralisation. Both the early-
stage and more advanced prospects are the focus of ongoing exploration.
Mt McClure
The Mt McClure Gold Project, acquired in August 2022, is located ~15km southwest of the historic
Bronzewing Mine and includes three mining leases with JORC 2012 Resources totalling 182,200oz Au.
The project has prospectivity for new shallow gold deposits adjacent to current Resources and in the
footwall and hanging wall of the stratigraphy. Ground gravity survey data from the prior Quarter support
ongoing structural/stratigraphic interpretations for 2026 targeting.
yandalresources.com.au | ASX:YRL 10
Figure 4: Yandal Resources exploration Project locations within the Yandal
Greenstone Belt. The Arrakis Prospect is located within the Caladan target area.
King of the Hills
Thunder Box
Darlot
Bellevue
Kathleen Valley
Mt Keith
Wiluna
Jundee
Bronzewing
Wiluna
Leinster
New England Granite
Siona Discovery
Flushing Meadows
Deposit 268koz
Caladan Target area
Arrakis Discovery
0 100km
Ironstone Well-
Barwidgee Gold Project
Mt McClure Gold
Project 182koz
Dingo Range Project
yandalresources.com.au | ASX:YRL 11
Figure 5: Yandal Resources exploration target areas and prospect locations within the northern
Yandal Greenstone Belt. The Arrakis Prospect is located within the Caladan target area.
5km
Salusa
Caladan
Target Area
Siona
Flushing Meadows
(268Koz)
New England
Granite
Nayla Target
Area
Geidi Prime
Target Area
5km
Radius
Arrakis
Discovery
Irulan Dolerite
Complex
yandalresources.com.au | ASX:YRL 12
Table 2 – Yandal Resources Ltd - Mineral Resource Summary
Deposit
Indicated Inferred Total
Tonnes
(‘000s)
Grade
(g/t)
Au
(oz)
Tonnes
(‘000)
Grade
(g/t)
Au
(oz)
Tonnes
(000’s)
Grade
(g/t)
Au
(Oz)
Ironstone Well
Flushing Meadows1 2,141 1.3 91,000 5,245 1.1 177,000 7,386 1.1 268,000
Mt McClure
Challenger2 718 1.9 44,000 718 1.9 44,000
Success3 1,255 1.9 75,000 1,255 1.9 75,000
Parmelia4 252 2.1 17,000 252 2.1 17,000
HMS Sulphur5 1010 1.2 39,000 1010 1.2 39,000
Gilmore6 134 1.7 7,200 134 1.7 7,200
Sub-total - MMC 3,369 1.7 182,200 3,369 1.7 182,200
Grand-total7 2,141 1.3 91,000 8,614 1.3 359,200 10,755 1.3 450,200
Due to the effects of rounding, totals may not represent the sum of the individual components.
1. Reported above 0.5g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 4 November 2020 for full
details. 2. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 22 August 2022 for
full details 3. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 6 September
2022 for full details. 4. Reported above 1.0g/t Au lower cut-off grade; refer to Yandal Resources Ltd ASX announcement dated 20
September 2022 for full details. 5. Reported above 0.5g/t Au lower cut-off grade within this announcement 6. Reported above 1.0g/t
Au lower cut-off grade within this announcement. 7. All Resources are reported as global estimates, not constrained by optimised pit
shells.
Competent Person Statement
The information in this document related to Exploration Targets and Exploration Results, geology and data
compilation is based on information reviewed or compiled by Mr Christopher Oorschot, a Competent
Person who is a Member of The Australasian Institute of Geoscientists. Mr Oorschot is the Managing Director
of the Company, is a full-time employee and holds shares and options in the Company. Mr Oorschot 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 Oorschot consents to the inclusion in this announcement of the matters based on this
information in the form and context in which it appears.
The information in this announcement that relates to the Flushing Meadows and Mt McClure Mineral
Resource Estimates is based on information compiled and generated by Andrew Bewsher, an employee
of BM Geological Services Pty Ltd (“BMGS”). Both Andrew Bewsher and BMGS hold shares in the company.
BMGS consents to the inclusion, form and context of the relevant information herein as derived from the
original resource reports. Mr Bewsher has sufficient experience relevant to the style of mineralisation and
type of deposit under consideration and to the activity which is being undertaken to qualify as a
Competent Person as defined in the 2012 Edition of the JORC ‘Australasian Code for Reporting of
Exploration Results, Mineral Resources and Ore Reserves’.
YRL confirms that it is not aware of any new information or data that materially affects the information
included in the original market announcement. The Company confirms that the form and context in which
the Competent Person’s findings are presented have not been materially modified from the original market
announcement.
yandalresources.com.au | ASX:YRL 13
Forward Looking Statements
This document may contain certain forward-looking statements. Forward-looking statements include, but
are not limited to, statements concerning Yandal Resources Limited’s (Yandal’s) current expectations,
estimates and projections about the industry in which Yandal operates, and beliefs and assumptions
regarding Yandal’s future performance. When used in this document, words such as “anticipate”, “could”,
“plan”, “estimate”, “expects”, “seeks”, “intends”, “may”, “potential”, “should”, and similar expressions are
forward-looking statements. Although Yandal believes that its expectations reflected in these forward-
looking statements are reasonable, such statements are subject to known and unknown risks, uncertainties
and other factors, some of which are beyond the control of Yandal, and no assurance can be given that
actual results will be consistent with these forward-looking statements. Drilling results presented indicate
geological potential for mineralisation, but there can be no certainty that these results will eventually form
part of a Mineral Resource Estimate.
Table 3 – Flushing Meadows diamond drilling program collar location summary. Please note that
collars have not yet been formally surveyed; the coordinates below are derived from a handheld
GPS and are accurate to within +/- 5m.
Hole ID
Hole
type
East
(m)
North
(m)
RL
(mAHD)
Azimuth
(degrees)
Dip
(degrees)
Pre-collar
Depth
(m)
Total
Depth
(m)
26IWBRC0090D RCD 279464 7030051 542.1 -60 235 122 459.9
26IWBRC0092D RCD 279377 7030234 541.1 -60 235 92 Underway
26IWBRC0094D RCD 279302 7030427 540.4 -60 245 92 453.0
26IWBRC0095D RCD 279825 7029730 547.0 -60 247 152 490.1
26IWBRC0096DA RCD 280044 7029163 554.0 -60 245 150 450.0
26IWBRC0097D RCD 279577 7029870 544.2 -60 245 122 337.0
26IWBRC0098DA RCD 279966 7029352 554.0 -55 255 140 474.8
26IWBRC0099D RCD 279780 7029503 549.0 -60 255 145 399.7
Table 4 – Flushing Meadows - Summary of significant RC assay results >0.3g/t Au with no more than 4m
of continuous internal waste included unless otherwise stated. All intercept lengths are reported as
down-hole lengths.
Hole
ID
Sample
type / Sub
Interval
From
(m)
To
(m)
Interval
(m)
Au
(g/t)
Comment
26IWBRC0090D RC 1m 38 39 1 0.3 Completely weathered
26IWBRC0090D RC 1m 62 63 1 0.8 Completely weathered
26IWBRC0092D RC 1m NSA
26IWBRC0094D RC 1m NSA
26IWBRC0095D RC 1m NSA
26IWBRC0096DA RC 1m 65 66 1 0.6 Completely weathered
26IWBRC0096D RC 1m 73 74 1 0.5 Completely weathered
26IWBRC0096D RC 1m 102 103 1 0.4 Moderately weathered
26IWBRC0097D RC 1m 8 9 1 1.0 Completely weathered
26IWBRC0097D RC 1m 19 20 1 0.5 Completely weathered
26IWBRC0097D RC 1m 95 108 13 0.4 Weakly weathered
26IWBRC0097D RC 1m 112 114 2 0.8 Weakly weathered
yandalresources.com.au | ASX:YRL 14
Hole
ID
Sample
type / Sub
Interval
From
(m)
To
(m)
Interval
(m)
Au
(g/t)
Comment
26IWBRC0098DA RC 1m 55 75 20 1.7 Completely weathered
26IWBRC0098DA Including 64 73 9 2.7 Completely weathered
26IWBRC0098DA RC 1m 113 116 3 1.2 Completely weathered
26IWBRC0098DA Including 115 116 1 3.0 Completely weathered
26IWBRC0099D RC 1m 4 6 2 3.3 Completely weathered
26IWBRC0099D Including 5 6 1 5.8 Completely weathered
26IWBRC0099D RC 1m 21 23 2 0.5 Completely weathered
26IWBRC0099D RC 1m 30 32 2 0.4 Completely weathered
26IWBRC0099D RC 1m 57 59 2 0.7 Completely weathered
26IWBRC0099D RC 1m 70 73 3 0.4 Fresh rock
26IWBRC0099D RC 1m 77 79 2 0.7 Fresh rock
26IWBRC0099D RC 1m 132 133 1 0.9 Moderately weathered
26IWBRC0099D RC 1m 141 143 2 0.3 Fresh rock
Relevant Previous ASX Announcements
• Gold Discoveries Expanding Across the IWB Project, 9 June 2026
• 2026 Exploration Commences Across the IWB Gold Project, 23 March 2026
• Mineral Resource Update - Flushing Meadows Gold Deposit, 4 November 2020
ASX Announcement 15 June 2026 Page 15
Appendix 1 – Ironstone Well-Barwidgee Gold Project, Arrakis RC and Diamond Drilling
JORC Code (2012) Table 1, Sections 1 and 2
Mr Christopher Oorschot, Managing Director of Yandal Resources, compiled the information in Section 1 and Section 2 of the following JORC Table 1 and
is the Competent Person for those sections. The following Table and Sections are provided to ensure compliance with the JORC Code (2012 edition)
requirements for the reporting of Exploration Results.
Section 1 Sampling Techniques and Data
Criteria JORC Code explanation Commentary
Sampling
techniques
Nature and quality of sampling (e.g. 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.
• Yandal Resources has completed RC (pre-collar) drilling across 200m spaced lines covering
the southern 1.6km of the Flushing Meadow Deposit. The drilling involved a 139mm face-
sampling bit down to depths between 140m and 286m. Holes were drilled at an angle of -60 °
to the southwest or northeast.
• Yandal Resources (YRL) RC drilling samples were collected via a rig-mounted static cone
splitter, splitting approximately 12.5% of the total sample volume. Two splits are collected for
each metre: a primary and a duplicate sample. The primary 1m samples are then sent to a lab
for further analysis. The duplicate samples are retained on-site unless they are submitted as
routine duplicates.
• Yandal Resources has completed diamond drilling across the Flushing Meadows deposit. The
drilling involved a mix of RC pre-collars down to fresh rock, followed by HQ (diameter of
~63.5mm) diamond core drilling to an average down-hole depth of 437m (between 337m and
490m). Holes were drilled at an angle of -60 ° to either the southwest. The core was halved with
a core saw, with the right-hand side (looking downhole) sampled. Before sampling, a company
geologist logs the core for lithology type, veining, alteration, and deformation. Sample lengths
vary according to logged geological intervals of interest, with a minimum of 0.2 metres and a
maximum of 1.0 metres. Sample quality is considered high.
Include reference to measures taken to ensure sample
representivity and the appropriate calibration of any
measurement tools or systems used.
• For YRL RC drilling, the cone splitter is regularly cleaned and inspected. The 1m bulk samples
are laid out in drill order. These bulk samples are regularly inspected for contamination, and
the volume of the bulk sample is monitored. These bulk samples are retained until all results are
received and may be used to collect additional field duplicates to verify lab results, logged
geology or any other form of analysis. If the bulk sample appears visually low in volume or
weight, this is recorded with the sample details. The same applies to damp or wet samples.
• Two splits are collected for each drilled metre: a primary and a secondary sample. The
Secondary sample is retained on-site and may be used to collect additional field duplicates
to verify lab results, logged geology or any other form of analysis.
• For YRL diamond drilling, sample recovery of each metre drilled was measured and recorded,
and high-resolution photos of each tray before cutting were obtained. The unsampled half of
the drill core is also retained. Intervals where the core is unoriented have been recorded.
ASX Announcement 15 June 2026 Page 16
Criteria JORC Code explanation Commentary
• For YRL diamond drilling, when the core is cut for sampling, the same side of the core, relative
to the bottom-of-hole orientation mark, is collected for analysis. For intervals without an
orientation mark, the core is pieced together, and foliation or common structures are used to
approximately orient the core for sampling purposes.
• Structural observations have also been recorded where the diamond core is oriented, and the
core was routinely checked for any structures sub-parallel to the core axis.
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 (e.g. ‘reverse circulation drilling was used to obtain
1 m samples from which 3 kg was pulverised to produce a
30 g charge for fire assay’). In other cases more
explanation may be required, such as where there is
coarse gold that has inherent sampling problems. Unusual
commodities or mineralisation types (e.g. submarine
nodules) may warrant disclosure of detailed information.
• RC drilling was used to obtain 1m samples from which a portion, between 1-5kg in weight, was
dispatched to Intertek Genalysis, Perth, Western Australia. At the lab, samples were crushed
and pulverised to produce a 50g charge for lead collection fire assay, with an Inductively
Coupled Plasma Optical (Atomic) Emission Spectrometry (ICPOES) finish for gold
determination, achieving a 0.005 ppm detection limit.
• For all YRL diamond drilling results, HQ core was cut in half and used to obtain 0.2m to 1.0m
half-core samples. These samples were submitted to Intertek Genalysis, Perth, Western
Australia, where they were dried, weighed, and crushed. The Sample pulp was then split to
produce a 50g charge for lead collection fire assay, with an Inductively Coupled Plasma
Optical (Atomic) Emission Spectrometry (ICPOES) finish for gold determination, achieving a
0.005 ppm detection limit.
Drilling
techniques
Drill type (e.g. core, reverse circulation, open-hole
hammer, rotary air blast, auger, Bangka, sonic, etc) and
details (e.g. 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).
• For YRL RC drilling, a 139mm diameter face sampling bit and hammer were used.
• YRL diamond core was drilled using HQ (63.5mm core diameter) coring bits. For both diamond
holes, diamond core drilling commenced via RC pre-collars, which was completed to fresh
rock. Subject to ground conditions, the core was oriented using a downhole orientation tool
(Reflex ACT Mk3 NQ/HQ Core Ori kit).
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.
• For YRL holes, RC drilling recoveries are visually assessed by the supervising geologist, and any
low-volume or weight samples are recorded, along with any damp or wet samples. Drill depths
are routinely verified at the completion of each drill rod (every 6m). The cone splitter is checked
for each drill site to ensure it is completely upright and level. Sample collection from the splitter
by drilling off-siders is monitored for any inefficiencies.
• No relationship or bias between sample recovery and grade within the RC drilling results has
been observed.
• For YRL diamond drilling core recovery is measured and recorded. The length of core
recovered for each metre drilled is measured to the nearest 5cm and entered into an Excel
spreadsheet along with information relating to fracture frequency (driller breaks are marked
ASX Announcement 15 June 2026 Page 17
Criteria JORC Code explanation Commentary
with a red “X”). In addition, dry and wet core photos are collected before the core is cut and
retained on the company server.
• For YRL diamond drilling, the orientation of contacts, veins and shears is regularly measured
and monitored.
• No relationship or bias between sample recovery and grade within the diamond drilling results
has been observed.
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 and percentage of the relevant
intersections logged.
• For YRL drilling, all RC holes have been logged in full by a qualified and experienced geologist.
RC chips and fines from each 1m interval drilled are inspected and logged for colour,
weathering, lithology, deformation, veining and sulphide species. All 1m samples are sieved
and retained in labelled and annotated chip trays. Chip trays are transported to Perth for long-
term storage and are available for review. The quality of logging information is
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