Annual Report to shareholders
VRX SILICA LIMITED
ABN 59 142 014 873
ANNUAL REPORT
30 JUNE 2020
CORPORATE DIRECTORY
DIRECTORS
Paul Boyatzis (Chairman)
Bruce Maluish (Managing Director)
Peter Pawlowitsch (Non-executive Director)
SECRETARY
John Geary
REGISTERED AND PRINCIPAL OFFICE
Level 1, 6 Thelma Street
West Perth WA 6005
Telephone: (08) 9226 3780
Facsimile: (08) 9226 3764
Website: www.vrxsilica.com.au
SHARE REGISTRY
Computershare Investor Services Pty Ltd
Level 11, 172 St George's Terrace
Perth WA 6000
Telephone: (08) 9323 2000
Facsimile: (08) 9323 2033
AUDITORS
RSM Australia Partners
Level 32, Exchange Tower
2 The Esplanade
Perth WA 6000
AUSTRALIAN SECURITIES EXCHANGE
VRX Silica Limited shares (VRX) are listed on the
Australian Securities Exchange.
VRX Silica Limited
1
LETTER FROM THE BOARD OF DIRECTORS TO SHAREHOLDERS
Dear Shareholders
This year VRX Silica Limited achieved significant milestones in the Company’s progression to becoming a
global supplier of high-grade silica sand, whilst always being guided by the levels of social and
environmental responsibility expected of a responsible corporate citizen.
Management was very early in proactively engaging with the Native Title Claimants of the Arrowsmith and
Muchea silica sand project areas. Our negotiations in good faith aimed to reach a set of shared long-term
objectives for all parties, and a range of measures designed to achieve those objectives over the terms of
all agreements.
The Company was pleased to announce in January 2020 these negotiations with the Whadjuk People
Native Title Claimants and their representative body had resulted in the parties entering into a Native Title
Mining Project Agreement for the Muchea Silica Sand Project.
Subsequent to the end of the financial year the Company received confirmation that the Working Group for
the Southern Yamatji People, Native Title claimants over the Arrowsmith North and Arrowsmith Central
Silica Sand Projects project areas, had approved the terms of its proposed Mining Project Agreement
covering the areas.
On the ground the Company has undertaken sufficient drilling to assume geological and metallurgical
continuity of the sand deposits, released substantial resource upgrades and robust Bankable Feasibility
Studies (BFS) for Arrowsmith North and Central as well as our Muchea Project.
Continued and extensive metallurgical test work commissioned by VRX Silica during the year has allowed
for the creation of a catalogue of silica sand products that can be produced from each of the Silica Sand
Projects. This test-work indicates likely qualities for the manufacture of glass, ceramics and foundry sand
products considered appropriate for eventual economic extraction from the Arrowsmith projects which has
favourable logistics with a rail line to the Geraldton Port and Muchea which has a nearby rail link to the bulk
terminal at Kwinana.
VRX Silica has developed a unique mining and rehabilitation methodology specific to the environment at
our Silica Sand Projects which will enable a successful restoration of mined areas by keeping the top half
metre of topsoil intact and relocated to previously mined areas.
The COVID-19 virus has intruded into all facets of our daily lives and business this year and looks to
continue doing so for the near future. Despite this we continue to engage with our potential offtake
customers by video meetings.
We expect to maintain the momentum and to this end, on behalf of the Board, I would like to thank all staff
and contractors for their valuable contribution during the year. I would also like to thank our shareholders
for their support.
Bruce Maluish
Director
For and on behalf of the Board
VRX Silica Limited
2
COMPANY REVIEW
REVIEW OF OPERATIONS
Highlights of the activities conducted by VRX Silica Ltd during the financial year ending 30 June 2020 were:
•
Arrowsmith North Mineral Resource Estimate Upgrade followed by Arrowsmith North BFS and
Maiden Ore Reserve
•
Arrowsmith Central Mineral Resource Estimate Upgrade followed by Arrowsmith Central BFS and
Maiden Ore Reserve
•
Executed a Strategic Alliance with China Southern Glass
•
Muchea BFS and Maiden Ore Reserve
•
Entered into a Native Title Mining Project Agreement for the Muchea Silica Sand Project with the
Whadjuk People Native Title Claim Applicants
The announcements for mineral resource estimate upgrades at the Arrowsmith North and Arrowsmith Central
Silica Sand Projects were followed by a Bankable Feasibility Study (BFS) and Maiden Ore Reserve
announcements for each of the projects and later in the period by a BFS and maiden Probable Ore Reserve
at the Muchea Silica Sand Project.
ARROWSMITH NORTH PROJECT
Arrowsmith North Mineral Resource Estimate Upgrade
The Arrowsmith North Silica Sand Project (Arrowsmith North) is located 270km north of Perth, WA (see
Figure 1). The maiden Mineral Resource Estimate (MRE)1 previously reported for Arrowsmith North was
based on a shallow hand auger drilling2 program.
This was followed by an aircore drill program completed during March 2019 and the receipt of the analytical
results from this program enabled the Company to upgrade the MRE on 9 July 2019 to 771 Mt @ 98.0%
SiO23. This is comprised of an Indicated Resource estimate of 248 Mt @ 97.7% SiO2 and an Inferred
Resource estimate of 523 Mt @ 98.2% SiO2 which was an overall increase of 398% on the maiden MRE
(see Table 1 and Table 2 below). All Mineral Resources are reported in accordance with the 2012 edition
JORC Code4.
The MRE included an unpredicted 313 million tonnes of high-grade white sand at 98.7% SiO2. The resulting
model defined two different sand types, “Yellow” and “White” sand (Table 1 and Table 2) which differ with
respect to their chemistry and particle size distribution.
The Indicated Resource is predominately within the Mining Lease application area which is within the 100%
VRX Silica owned and granted tenements E70/5109 and E70/5027. The majority was subsequently
converted to Probable Ore Reserves (see below) and supports the Company’s continued assessment of
Arrowsmith North being an extremely long-life mining project with world-class potential. No more drilling is
required prior to the Company commencing mining operations.
1ASX announcement of 2 October 2018, “Arrowsmith North Maiden Mineral Resource.”
2ASX announcement of 13 March 2019, “Drilling at Muchea and Arrowsmith Silica Sand Projects.”
3ASX announcement of 9 July 2019, “Arrowsmith North Mineral Resource Estimate Upgrade.”
4 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves
VRX Silica Limited
3
COMPANY REVIEW
Figure 1: Arrowsmith North Project Location
The MRE allows for a Mining Reserve to be estimated following the completion of a positive feasibility study.
The mining depth in the Arrowsmith North Project area is limited to mining above the water table, which is 10
metres below the drilled depths and below the Resource. Additionally, the top half metre of topsoil has been
discounted in the MRE as it will be used for rehabilitation.
VRX Silica Limited
4
COMPANY REVIEW
VRX Silica will undertake a further testwork program on the white sand, however metallurgical testwork
completed to-date confirms this updated silica sand resource is considered readily amenable to upgrading
by conventional washing and screening methods to produce a high-grade silica sand product with high mass
recoveries. The high-grade silica sand product specifications are expected to be suitable for industries such
as the glass making, foundry and ceramics industries.
Figure 2: Arrowsmith North Project schematic geology map showing MRE with separate drill type, Black dots =
aircore, Blue dots = auger
Figure 2 above shows the drill coverage over the tenements with the underlying sand types shown.
VRX Silica Limited
5
COMPANY REVIEW
Classification
Domain
White Sand
Yellow Sand
All Sand
White Sand
Yellow Sand
All Sand
White Sand
Yellow Sand
All Sand
Indicated
Inferred
Indicated +
Inferred
Million
Tonnes
33
215
248
280
243
523
313
458
771
SiO2%
Al2O3%
Fe2O3%
TiO2%
LOI%
98.7
97.5
97.7
98.7
97.7
98.2
98.7
97.6
98.0
0.50
1.10
1.00
0.50
1.00
0.80
0.54
1.08
0.86
0.20
0.40
0.40
0.10
0.40
0.30
0.15
0.40
0.30
0.20
0.20
0.20
0.20
0.20
0.20
0.18
0.17
0.17
0.20
0.50
0.50
0.20
0.50
0.40
0.24
0.52
0.41
*Note: Interpreted silica sand mineralisation is domained above a basal surface wireframe defined based on drill logging data.
The upper (Topsoil) layer within 0.5 m of surface is depleted from the modelled silica sand unit, being reserved for
rehabilitation purposes. All classified silica sand blocks in the model are reported. Differences may occur due to rounding.
Table 1: Arrowsmith North Silica Sand Mineral Resource Estimate as at July 2019
Classification
Domain
Indicated
White Sand
Yellow Sand
Updated
MRE (Mt)
33
215
Inferred
All Sand
White Sand
Yellow Sand
44
149
248
280
243
633%
163%
All Sand
White Sand
Yellow Sand
All Sand
194
44
149
194
523
313
458
771
270%
708%
307%
398%
Indicated +
Inferred
Table 2:
VRX Silica Limited
Maiden
MRE (Mt)
Difference
Tonnage Comparison with Prior estimate
6
COMPANY REVIEW
Arrowsmith North BFS and Maiden Ore Reserve
On 28 August 2019 VRX Silica announced details of its BFS and maiden Probable Ore Reserve at Arrowsmith
North5.
Financial Model
Based on capital and operating cost estimates a financial model was developed to evaluate the economics
of the Arrowsmith North project. Key outcomes from the BFS and summary financial model outputs are set
out below.
Maiden Probable
Ore Reserve
Post Tax, ungeared NPV10
$242,300,000
Post Tax, ungeared NPV20
$99,800,000
Post Tax, ungeared IRR
79%
Payback period (yrs) (post tax) (ramp up rate)
2.4
Exchange Rate US$/A$
$0.70
Life of Mine (yrs) (Scope of BFS)
25
EBIT
$1,144,000,000
Total Sales (initial 25 years) (no escalation)
$2,773,000,000
Cashflow after finance and tax
$835,000,000
Capex (2 mtpa)
$28,260,000
Capex contingency (inc)
Life of Mine C1 costs, FOB Geraldton (inc royalties)
20%
$30.18
Tonnes Processed (initial 25 years) (Mt)
53
Production Target (initial 25 years) (Mt)
47.7
Probable Ore Reserves @ 99.7% SiO2 (Mt)
204
Ore Reserve life (yrs)
102
JORC Resources (million tonnes)
771
Notes:
1. The Ore Reserve underpinning the above production target has been prepared by a Competent Person in
accordance with the requirements of the JORC Code.
2. The material assumptions for the BFS are set out below. All such material assumptions continue to apply
and have not materially changed.
3. All figures are presented in Australian dollars, unadjusted for inflation
5 ASX announcement of 28 August 2019, “Arrowsmith North BFS and Maiden Ore Reserve.”
VRX Silica Limited
7
COMPANY REVIEW
Key Points and Assumptions
The BFS is based on only 25 years production from a considerable potential +100 year mine life. The project
will be a potentially new long-term industry for Western Australia with substantial economic benefits, including
long-term employment and royalties with a significant economic contribution to the local and Mid West region.
The Company has received great support for the project at meetings with the local Shires, Mid West
Development Commission, Mid West Chamber of Commerce & Industry and various local Members of State
and Federal Parliament.
The Company has engaged with the Department of Water and Environmental Regulation following
preliminary environmental studies to identify key issues pertaining to the project environmental approvals for
mining particularly the habitat for potential foraging by Red Tail and Carnaby’s black cockatoos.
VRX Silica has developed a mining and rehabilitation methodology specific to the environment at Arrowsmith
North which will enable a successful restoration of mined areas.
Key economic assumptions for the Arrowsmith North BFS are as follows:
Currency
Australian dollars
Sales contracts in Asia for silica sand are invariably based $US and a
A$0.70 exchange rate has been applied
Project life
25 years
Total probable Ore Reserve is well in-excess of this time period,
however the model is conservatively restricted to 25 years
Depreciation
15% rate on capital
Corporate tax rate
27% on taxable profit
Production
Steady state of production from Probable Ore Reserves over life of mine,
with the first 3 years at 1 million tonnes per year and thereafter at 2
million tonnes per year
The Company has currently expressions of interest and letters of intent
to purchase 1.5 million tonnes per year of Arrowsmith North products
and expects further interest once these products are made available to
the market
Shares on Issue
404,318,617
NPV estimation discount
rates
Standard financial modelling conducted at both 10% and 20% discount
rates.
The 20% rate is generally above standard reporting rates but
demonstrates that the Project is still financially robust at this higher rate
Capital cost
Based on estimates ±15% from engineering companies with extensive
experience in sand separation
Operating costs
A$30.18 C1 costs, including royalties
Based on first principles and current rates for equipment
Sales revenue
US$35-53 per dry metric tonne dependent on product type, product
quality, contract terms and quantity
Revenue is constant based on current prices and ignores any projected
growth in prices
Maximum debt
A$26 million
Borrowing rates
12%
Accounts receivable
30 days
Accounts payable
30 days
VRX Silica Limited
8
COMPANY REVIEW
Plant maintenance
5% of capital cost per year
Environmental bond
A$500,000
May be substituted by the WA Department of Mines, Industry Regulation
and Safety’s “Mining Rehabilitation Fund”
Capex contingency
20%
Recoveries
N40 (Foundry ASF 40)
40%
N20 (Foundry ASF 20)
24%
NF400 (Glass 400 ppm Fe2O3) 20%
Recoveries are based on CDE testwork at ±5%
Probable Ore Reserve
Table 3 below details the Probable Ore Reserve that will be produced from the mining of the Indicated Mineral
Resource and processing in a purpose built, wet sand processing plant.
The plant will produce four saleable products for different markets with a total Probable Ore Reserve of
223Mt, with 204Mt contained within the mining lease application MLA70/1389.
Chemical Composition
Within MLA70/
1389
Product
Recovery
Million
Tonnes
Million Tonnes
SiO2
%
Al2O3
%
Fe2O3
%
TiO2
%
LOI
%
Arrowsmith-N20
24%
60
54
99.7
0.2
0.05
0.035
0.1
Arrowsmith-N40/
NF500
60%
149
136
99.7
0.2
0.05
0.035
0.1
Local Market
6%
15
14
223
204
Classification
Probable
Global
Total Reserve
Particle Size
Sieve Opening (Mesh/μm Retained)
40 /
50 /
70 /
100 /
140 /
425
300
212
150
106
Product
10 /
2mm
20 /
850
30 /
600
200 /
75
AFS
No
Arrowsmith-N20
0.10%
3%
87%
8%
1%
0.10%
-
-
-
21
Arrowsmith-N40
-
0%
21%
36%
24%
13%
5%
1%
0%
36
Arrowsmith-NF500
-
-
0.50%
40%
42%
17%
1%
0%
-
38
Local Market
-
-
-
-
-
-
64%
22%
14%
-
Table 3: Arrowsmith North Silica Sand Probable Ore Reserve as at July 2019
VRX Silica Limited
9
COMPANY REVIEW
Metallurgical Factors
As a part of the upgraded MRE, CSA Global reviewed the metallurgical testwork to comply with Clause 49 of
the JORC Code. CSA Global has concluded that the available process testwork indicates likely product
qualities for glass, ceramics and foundry sand are considered appropriate for eventual economic extraction
from Arrowsmith North. Favourable logistics and the location of the project support the classification of
Arrowsmith North (in accordance with Clause 49) as an industrial mineral with an Inferred/Indicated Mineral
Resource
The extensive metallurgical testwork which has been completed by CDE Global at their facility in Cookstown,
Northern Ireland, and Nagrom in Kelmscott, Perth, allowed for the creation of a catalogue of silica sand
products that could be produced from Arrowsmith North6 (see Table 4).
A key challenge for industrial minerals projects is meeting market specifications. The silica sand market has
specifications for parameters such as purity (e.g. SiO2 content) in addition to tight specifications for trace
elements such as Fe, Ti, Al and Cr in the glass industry. The Company is confident that it can meet these
specifications from Arrowsmith North.
Chemical Composition (%)
Product
Industry
SiO2
Al2O3
Fe2O3
TiO2
CaO
MgO
K2O
Arrowsmith-N20
Arrowsmith-N40
Arrowsmith-NF500
Foundry
Foundry
Glass
99.7
99.7
99.7
0.20
0.20
0.20
0.050
0.050
0.050
0.035
0.035
0.035
0.010
0.010
0.010
0.002
0.002
0.002
0.030
0.030
0.030
Particle Size
Product
Arrowsmith-N20
Arrowsmith-N40
ArrowsmithNF500
Sieve Opening (Mesh/μm Retained)
10 /
20 /
30 /
40 /
50 /
70 /
2mm 850
600
425
300
212
0.1%
3%
87%
8%
1%
0.1%
0%
21% 36% 24% 13%
0.5%
40%
42%
17%
100 /
150
140 /
106
200 /
75
5%
1%
0%
1%
0%
AFS
No
21
36
Table 4: Arrowsmith North saleable products from catalogue
Table 4 shows the recovered products which make up the Probable Ore Reserve. The mass balance of the
particle sizes was analysed allowing for the recoveries of these products in a wet processing plant to be
estimated.7 The recovery of each product is shown in Table 5.
Product
Arrowsmith-N20
Arrowsmith-N40 / NF500
Local Market
Industry
Foundry
Foundry / Glass
Fine sand
Total Recovery
Recovery
24%
60%
6%
90%
Table 5: Arrowsmith North Product Recovery
6ASX announcement of 26 February 2019, “Testwork Update and product Catalogues”.
7ASX announcement of 3 May 2019, “High Recovery from Silica Sand Process Plant Design”.
VRX Silica Limited
10
COMPANY REVIEW
Material Modifying Factors – Mining Factors
The mining method chosen for Arrowsmith North is a rubber wheeled front-end loader, feeding into a 3 mm
trommel screen to remove oversize particles and organics. The undersize sand is slurried and pumped to a
sand processing plant located proximal to the Eneabba to Geraldton railway line. After processing, the silica
sand is loaded into railway trucks for bulk export from the Geraldton Port.
Mining of the dune sand will extract to the base of the Indicated Resource/Probable Ore Reserve. This level
is roughly the same as the freehold land boundary on the western side of the mining area and will leave a
slightly undulating surface. On the eastern side of the mining area the sand will slope upward as a 10%
gradient to the top of the adjacent dunes.
100% of the material in the Mining Lease application area is considered to be sand that can be beneficiated
to a saleable silica sand project. The top 500mm has been excluded from the MRE as it will be reserved for
rehabilitation purposes. As there is no waste material, the recovery factor is considered to be 100% and ore
loss therefore is considered to be 0%.
Material Modifying Factors – Environmental Studies
Development location:
•
South of the Yardongo Nature Reserve
•
Approximately 10 km inland of the coast
•
North of the Arrowsmith River (Registered Aboriginal Heritage Site)
•
Outside of World Heritage Areas, National Heritage Places, Ramsar Wetlands, Conservation Reserves
or Commonwealth Marine Reserves
The Probable Ore Reserve is located within an area of deep sands, leached of nutrients. The vegetation is
coastal low scrub heath (known as Kwongan heath). There are relict dune structures which are represented
as low rolling hills.
Assessment process:
•
Referral submission to the Federal Department of the Environment and Energy (DotEE);
•
Submission of Section 38 referral to State Environmental Protection Authority (EPA)
•
Seek an Accredited Environment Protection and Biodiversity Conservation Act 1999 (Cth) Assessment
under the State Environmental Protection Act 1986 (WA) via an Environmental Review Document with
public comment
•
Undertake any further studies required
•
Submission of Environmental Review Document
Mitigation strategies:
•
Proposed Action lies within a large Development Envelope, allowing for the flexibility to target areas of
lower significance to matters of national environmental significance (MNES)
•
Disturbance will be kept to a minimum, up to 35 ha per year and 14 ha at any one time
•
Progressive rehabilitation using topsoil re-location to ensure topsoil and plants are translocated intact to
previously mined areas
•
Conduct further surveys to identify MNES
•
Use findings to steer the project and avoid MNES where possible
There are no mine tailings storage requirements, there are no waste dumps and processing requires no
chemicals.
VRX Silica Limited
11
COMPANY REVIEW
Material Modifying Factors – Infrastructure
The project is located on unallocated crown land which is east of freehold land and bounded to the north by
a Nature Reserve and South by a proposed Nature Reserve. The west boundary of the project area is the
limit of tenure. The Brand Highway is proximal to the area and access is via the Mount Adams Road from the
north or Brand Highway to the south. The Eneabba/Geraldton rail line lies to the south west of the project
and will be used to transport the processed silica sand to the Geraldton Port for bulk export.
The project will require its own installed power and water infrastructure and labour will be sourced from the
nearest towns Dongara and Eneabba (approximately 30km from the mine site) and there will be no
accommodation installed at the mine site.
Costs
Operating Costs
Operating costs have been determined from first principles and are estimated to include all costs to mine,
process, transport and load product on to ships. They are estimated on 1 million tonnes per year throughput,
with expected unit cost savings if throughput is increased as anticipated to potentially 2 million tonnes per
year.
Royalties
The prevailing rate of royalty due to the State is used in the Company’s economic assessments. The State
Royalty rate is A$1.17 per dry metric tonne and reviewed every 5 years with the next review due in 2020.
There are no other royalties payable (including private) though a royalty may be negotiated with Native Title
claimants.
Revenue
Product Quality
Multiple products will be differentiated during processing subject to required particle size distribution by
screening. Recovery of products has been independently assessed by CDE Global, a world leading silica
sand testing laboratory.
Commodity Prices
Commodity prices for silica sand products have been determined by independent industry source Stratum
Resources. The industry standard is that sales contracts are in US dollars. The exchange rate to convert to
Australian dollars will be the prevailing rate at the time of payment.
Subject to final quality produced, the prices for the commodity will range from US$38 to US$58 per dry metric
tonne Free on Board (FOB). There will be no other treatment, smelting or refining charges. There are no
shipping cost estimates with all contracts to be based on FOB rates.
Revenue will be based on a negotiated per shipment basis per dry metric tonne FOB with payment by demand
on an accredited bank letter of credit.
Market Assessment
Industry leader Stratum Resources was commissioned by the Company to prepare an independent
assessment of the current market prices for proposed products. The assessment includes projections for
future demand and supply of silica sand and concludes there is a future tightening of supply of suitable
glassmaking silica sand with a commensurate future increase in price.
Sales volumes have been estimated as a result of received letters of intent and expressions of interest to
purchase products.
VRX Silica Limited
12
COMPANY REVIEW
Economic Factors
The Company’s economic analysis has calculated a 10% and 20% discounted ungeared post tax net present
value (NPV). A 20% discounted NPV has also been calculated to demonstrate the strength of the economic
analysis.
The analysis is based on a 25-year production profile despite the Probable Ore Reserve far exceeding that
project life and has not considered any escalated future product prices nor any inflation to operating costs.
The analysis has used a US$/A$ exchange rate of US$0.70/A$1.00.
The analysis is most sensitive to the exchange rate and sales prices. The analysis indicates the financials of
the project are very robust and there is a high confidence that a viable long-term mining operation can be
justified. Capital requirements are based on independent estimates.
Social Factors
The Company made an application for a mining lease (M70/1389) on 21 December 2018. The application
lies within the Southern Yamatji Native Title claim boundaries (WC2017/002), which replaced a precombination claim (WC2004/002) by the Amangu People. The Company has completed negotiations with
the claimant group regarding the mining lease application and the Company expects full execution of the
formal agreement for the grant of the mining lease is imminent. The project is wholly on unallocated crown
land and there is little negative impact on local communities.
Project Funding
The financial model summarised in the BFS sets out the project metrics and provides a basis for the potential
capital structure of the Company for the development of the project. Total capital expenditure at Arrowsmith
North (for a 2 million tonnes per annum processing plant) is estimated at approximately A$28 million (the
BFS details capital cost estimates).
The Company anticipates that the source of funding the capital investment at Arrowsmith North will be any
one, or a combination of, equity, debt and pre-paid offtake from the project. Whilst no final decision has been
made in that regard, the financial model assumes a maximum A$26 million in debt.
The Company has received a number of enquiries and expressions of interest from debt financiers for the
project. The financial model provides for debt capacity and is designed to meet the expectations of any
providers of potential debt funding for their due diligence and other internal requirements.
In addition, VRX Silica has also received enquiries and expressions of interest from organisations across
Asia for silica sand products from the project and holds signed letters of intent for substantial tonnages. A
number of these organisations have expressed interest in becoming a funding partner of the Company for
development of a mine by way of pre-paid offtake arrangements. The balance of the Company’s capital
requirements will be funded from equity capital.
Whilst the envisaged project development requires a low capital intensity relative to a greenfields hard rock
mining project, and any one of, or a combination of equity, debt and pre-paid offtake is planned, VRX Silica
has not as yet secured the required capital. The positive financial metrics of the BFS and feedback from
potential funding partners provides encouragement as to the likelihood of meeting optimum project and
corporate capital requirements.
VRX Silica Limited
13
COMPANY REVIEW
ARROWSMITH CENTRAL PROJECT
Arrowsmith Central Mineral Resource Estimate Upgrade
The Arrowsmith Central Silica Sand Project (Arrowsmith Central) is located 270km north of Perth, WA (see
Figure 3).
Figure 3: Arrowsmith Central Project Location
The air core drill program conducted at Arrowsmith North during March 2019 (see above) also included
Arrowsmith Central.
VRX Silica Limited
14
COMPANY REVIEW
The previously reported maiden MRE for Arrowsmith Central8 was based on shallow hand auger drilling9 and
the receipt of the air core analytical results enabled the MRE to be upgraded to an Indicated Mineral Resource
of 28.2 Mt @ 96.6% SiO2 in addition to an Inferred Mineral Resource of 48.3 Mt @ 96.9% SiO2 for a total MRE
of 76.5 Mt @ 96.8% SiO2. This was announced to ASX in August 2019. 10 All Mineral Resources are reported
in accordance with the JORC Code (see Table 6 and Table 7).
The Indicated MRE is predominately within the Mining Lease application area for Arrowsmith Central and the
Company expects that the majority of the Indicated Mineral Resource will convert to Probable Reserves and
a long-life mining project. The estimation of an Indicated Mineral Resource will allow for an Ore Reserve to
be estimated once a feasibility study is completed.
This Arrowsmith Central MRE complements Arrowsmith North and adds not only to VRX Silica’s total inventory
but will also produce alternative products for the glassmaking and foundry industries in Asia.
SiO2%
Al2O3%
Fe2O3%
TiO2%
LOI%
Indicated
Million
Tonnes
28.2
96.6
1.7
0.4
0.2
0.7
Inferred
48.3
96.9
1.5
0.4
0.2
0.7
Indicated + Inferred
76.5
96.8
1.5
0.4
0.2
0.7
Classification
* Note: Interpreted silica sand layer is domained above a basal surface wireframe defined based on
the drill sampling depths. A depletion zone, consisting of the upper 0.5 m, is reserved for rehabilitation
purposes and is not estimated or reported. Differences may occur due to rounding
Table 6:
Arrowsmith Central Silica Sand Mineral Resource Estimate as at July 2019
Maiden
MRE (Mt)
Updated
MRE (Mt)
28.2
Difference
Inferred
28.0
48.3
173%
Indicated + Inferred
28.0
76.5
273%
Classification
Indicated
Table 7:
Tonnage Comparison with Prior estimate
The MRE is wholly within granted tenement E70/4987 which is 100% owned by the Company. This MRE
update is based on the results of the most recent drilling, with the initial hand auger drilling being used to
assist in the model estimation. The modelled extents are further limited to within the VRX Silica nominated
Arrowsmith Central target area and based on the geologically logged drill data and with reference to the
publicly available soil mapping data (see Figure 5).
8ASX announcement of 13 December 2019, “Arrowsmith Central Maiden Mineral Resource.”
9ASX announcement of 13 March 2019, “Drilling at Muchea and Arrowsmith Silica Sand Projects.”
10ASX announcement of 15 August 2019, “Arrowsmith Central Mineral Resource Estimate Upgrade.”
VRX Silica Limited
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