Mandalay Resources has strengthened operations and generated positive cash flow at its Costerfield gold-antimony mine in Australia. High-grade production from the Youle vein has increased production year-over-year. Exploration continues to extend Youle and discover new high-grade zones through deep drilling and regional targeting. Costerfield remains one of the highest grade gold mines in the world and has significant exploration potential.

1. STRENGTHENED
OPERATIONS &
POSITIVE CASH
FLOW GENERATION
March 2021
TSX | MND OTCQB | MNDJF

2. Forward-looking Statements
This presentation contains "forward-looking statements" within the meaning of applicable securities laws, including statements relating to life of mine
production plans, exploration plans and the growth and strategy of Mandalay. Actual results and developments may differ materially from those contemplated
by these statements depending on, among other things: exploration results or production results not meeting management’s expectations; capital, production
and operating cost results not meeting current plans; and changes in commodity prices and general market and economic conditions. The factors identified
above are not intended to represent a complete list of the factors that could affect Mandalay. A description of additional risks that could result in actual results
and developments differing from those contemplated by forward looking statements in this presentation can be found under the heading “Risk Factors” in
Mandalay’s annual information form dated March 30, 2020, a copy of which is available under Mandalay’s profile at www.sedar.com. Although Mandalay has
attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements,
there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-
looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly,
readers should not place undue reliance on forward-looking statements.
Quality Control and Assurance
Quality control and assurance programs are implemented in line with the standards of National Instrument 43-101.
The exploration programs at Mandalay’s properties are supervised by Chris Davis, Vice President of Operational Geology and Exploration at Mandalay
Resources, is a Charted Professional of the Australian Institute of Mining and Metallurgy (MAusIMM CP(Geo)), and a Qualified Person as defined by NI 43-
101. He has reviewed and approved the technical and scientific information provided in this presentation. Mr. Davis regularly visits Mandalay’s properties, and
supervises the collection and interpretation of scientific and technical information contained in this presentation.
Mr. Davis has visited Costerfield and Björkdal and has supervised the preparation of this presentation.
All currency references in US$ unless otherwise indicated.
2

3. A Profitable Gold Producer Delivering Value and Exploration Upside
3
Costerfield Mine
Australia
Björkdal Mine
Sweden
105,000 – 117,000 AuEq oz
2021 PRODUCTION GUIDANCE Two producing gold mines in Australia and
Sweden – both mining-friendly, tier-one
jurisdictions
• Successful turnaround with both operations continuing to
be significant cash generators in 2021
• Costerfield continued exploration success at one of
highest gold grade mines in the world
• Björkdal beginning to reap the benefits of higher grade,
wider Aurora zone

4. Strategy
4
Maximize cash
flow from
operations
Unlock further
value and mine
life through
exploration
Continue to
significantly
improve
balance sheet
Re-invest
cash in growth
opportunities
1. 2. 3. 4.

5. Demonstrated Operational Turnaround
5
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
0
5,000
10,000
15,000
20,000
25,000
30,000
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
2019 2020
USD$/oz
Production
AuEq
oz
Production and Cash Cost Performance
Costerfield Production Björkdal Production
Costerfield Cash Cost Björkdal Cash Cost
FIVE CONSECUTIVE QUARTERS
of improved saleable gold production
• Q4 2020 marks Mandalay’s best
quarterly production performance
since Q4 2017
• Significant decrease in Costerfield
cash costs in 2020, with stable
costs at Björkdal
• Sustainable cash cost reductions as a result of
higher-grade material and improved
underground operations
2020 CONSOLIDATED COSTS & CAPEX
Cash cost (1) $843 per oz AuEq
All-in-sustaining cost (1,2) $1,254 per oz AuEq
Capital expenditures (3) $46.9M
1. Cash cost and all-in sustaining cost are non-IFRS measures.
2. Consolidated costs per Au Eq. oz includes corporate overhead spending, costs associated with the trial processing of waste dumps at Cerro Bayo and total care and maintenance costs
3. CAPEX breakdown: $23.6M capital development, $17.0M PPE & $6.3M exploration

6. 6
A Compelling Growth Trajectory
2019 76,659 AuEq oz
2020 (1)
103,444 AuEq oz
2021E (2)
105,000 – 117,000 AuEq oz
2021 CONSOLIDATED COSTS GUIDANCE
Cash cost (3) $800 – $1,000 per oz AuEq
All-in-sustaining cost (3,4) $1,100 – $1,350 per oz AuEq
Capital expenditures $48M – $56M
Met upwardly-revised 2020 production guidance
Demonstrated Organic Growth
• Costerfield: Outperformance from high-
grade Youle vein resulting in lift in 2020
production and guidance.
• Youle Production scheduled to increase
through 2021
• Björkdal: Steady ramp-up expected from
the Aurora zone as more levels are
developed and stoping is increased
1. 2020 realized prices: $1,804/oz Au and $5,659/t Sb
2. 2021E gold equivalent production assumes average metal prices of: Au $1,860/oz, Sb $6,600/t
3. Cash cost and all-in sustaining cost are non-IFRS measures.
4. Consolidated costs per Au Eq. oz includes corporate overhead spending, costs associated with the
trial processing of waste dumps at Cerro Bayo and total care and maintenance costs

7. Four Consecutive Quarters of Growing Positive Cash Flow
Turnaround resulting in steadily improving
financial performance with significant free
cash flow growth
7
-10,000
-
10,000
20,000
30,000
40,000
50,000
60,000
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
2019 2020
USD'000
Quarterly Financial Performance
Revenue EBITDA Adjusted net income (loss)
5x GROWTH IN ADJUSTED EBITDA Y-O-Y
$94.2M ADJUSTED EBITDA – 53% ADJUSTED EBITDA MARGIN
66% GROWTH IN REVENUE Y-O-Y
$179.0M REVENUE YE2020: HIGHEST FULL-YEAR RESULT SINCE 2016
C$0.51 ADJUSTED NET INCOME PER SHARE
$34.7M ADJUSTED NET INCOME GENERATED IN 2020

8. 8
Expect to be net debt free in 2021
Four Consecutive Quarters of Growing Positive Cash Flow
Dramatically improved operations and cash
generation expected to significantly improve
balance sheet
8
$25.3M FREE CASH FLOW IN 2020
$34.2M CASH AS AT YE2020
A GROWING CASH BALANCE IN 2020
• Three-year, $65M syndicated facility with HSBC Bank
Canada and Macquarie Bank (Currently $59M after
Q4 2020 repayment)
• Debt repayment schedule: $3.78M quarterly with a
bullet payment of $28.76M in Q1 2023
21,454
34,206
-20,000
-10,000
-
10,000
20,000
30,000
40,000
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
2019 2020
USD'000
Quarterly Cash Flows and Cash Balance
Free cash flow Cash and cash equivalents
$25.3M in free
cash flow
generated in 2020
OPPORTUNITY TO BE NET DEBT FREE IN 2021

9. COSTERFIELD
OPERATIONS

10. 12.6
0
10
20
30
40
50
Fosterville -
Kirkland Lake
Nevada
Operations -
Hecla
Mascassa -
Kirkland Lake
Segovia - Gran
Colombia
Eagle River -
Wesdome
Youle -
Mandalay
Resources
Hope Bay -
TMAC
Island Gold -
Alamos Gold
Bambanani -
Harmony Gold
Seabee - SSR
Mining
Au
grade
g/t
Costerfield Gold-Antimony Mine
Production profile reinvigorated by
high-grade Youle vein
• High-grade ore production from Youle
commenced in Q4 2019
• Processed grades of 11.60 g/t Au and
5.12% Sb YE2020
• Continual uplift in production expected
over the next 12 months
• Highly-prospective land package with
massive exploration upside
10
OVERVIEW
Location Victoria, Australia
Land package 1,293 hectares
Life of Mine 4 – 5 years
2021E Production 53,000 – 60,000 Au Eq oz
2021E Cash costs (1) $675 – $825 per oz AuEq
2021E AISC (1) $950 – $1,100 per oz AuEq
CAPEX $16M – $20M
P&P Reserves (2) 616,000 t @ 12.8 g/t Au, 3.5% Sb for 255,000 Au oz and 21,700 Sb t
1. Cash and all-in sustaining costs are non-IFRS measures. Please refer to the Company's management's discussion and analysis for further information.
2. Mining Plus Pty Ltd. Effective December 31, 2020, documented in an independent NI 43-101 Technical Report that will be filed within 45 days of Feb 23, 2021
3. “Highest-grade underground gold mines in Q1 2020”, Vladimir Basov Contributing to kitco.com November 30, 2020
SIXTH HIGHEST gold mine in the world (3)

11. Demonstrated History of Replacing Mined Ounces
and Resource Growth
11
• Has maintained an approximate 3 – 4 year
mine life for the past 9 years
• Achieved with minimal exploration spending
• Total discovery cost of M&I Resources of
approximately $31 per AuEq oz
• Historically very little target testing and
generative drilling (less than $10M over 11
years)
• 2021 to be largest exploration spend at
Costerfield +$6M, with focus on target
testing and generative drilling
MANDALAY HAS BEEN PRODUCING
FROM COSTERFIELD FOR
+10 YEARS
$-
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
-
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Exploration
Expenditure
(USD’000)
AuEq
oz
Costerfield M+I Profile V's Exploration Expenditure (Au Eq. oz)
Youle Brunswick Cuffley
Augusta Cumulative Depletion Infill (US$)
Testing (US$) Generative (US$) Yearly Depletion

12. Youle Vein:
High-Quality, Low-Cost Production and Organic Growth
Youle providing Costerfield with sustainable organic growth year-over-year
12
0
20
40
60
80
100
0
2
4
6
8
10
12
14
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
2019 2020
Recovery
%
Grade
(g/t
or
%)
Grade and Recovery
Mill head grade Au g/t Mill head grade Sb %
Au Recovery Sb Recovery
-
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
-
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
2019 2020
$USD
per
AuEq
oz
AuEq
oz
Production
Production and Cash Costs
AuEq produced Cash cost per oz AuEq Produced
2.3x GROWTH IN AuEq oz PRODUCTION Y-O-Y
58,148 AuEq oz Production YE2020
127% & 73% INCREASE IN Au & Sb GRADES Y-O-Y
11.60 Au g/t & 4.25% Sb YE2020

13. Three Keys to Value Creation at Costerfield
13
Continued
Sustainable High-
grade Production
Deep Hole
Drilling
Exploring
High-Potential
Targets
• Costerfield is the second highest grade gold mine in Australia. Expected to see this high-
grade profile continue
• Increasing gold recoveries at plant (CavTube flotation commissioning for Q1 2021)
Targeting super high-grade mineralization at depth
• Regional success has shown potential for super grade deposits within the region
• 2 holes have been completed to date and further depth drilling in 2021
Surface drilling on highly-prospective targets
• Targets include Youle Extension, Damper Gully, True Blue, and Brown’s & Robinson’s
• Exploration update videos available here

14. COSTERFIELD
EXPLORATION
OPPORTUNITIES

15. Exciting District-Scale High-Grade Exploration Potential
Costerfield exploration program
consists of:
15
TARGET TESTING YOULE EXTENSIONS
DEEP HOLE DRILLING
REGIONAL TARGET TESTING
Youle Workings
Brown’s Target and
historic workings.
Part of a 2.5km
corridor of shallow
workings
Augusta Portal and Mine
True Blue Target
and historic
workings.
Part of a 3.5km
corridor of shallow
workings and
geochemical
anomalism
Brunswick Portal and
Processing Facility
Antimony Creek historic
workings
Part of a 4km corridor of
shallow workings and
surface geochemical
anomalism
5km
1km 2.5km

16. 1. Extensional Drilling at Youle: Continuity of High-Grade
• Continuous core defined by multiple intercepts of
+50 g/t AuEq over 1.8 m minimum mining width
• 2021 extensional drilling intercepted high-grade
veining to the North of the current mine design
JAN 2021 HIGHLIGHTS: NEW HIGH-GRADE
RESULTS NORTH OF YOULE EXTENDING AT DEPTH
345.1 g/t gold and 19.7% antimony over a true width of
0.11 m in BC166W1
316.1 g/t gold and 0.1% antimony over a true width of
0.22 m in BC167
142.0 g/t gold and 0.0% antimony over a true width of
0.07 m in BC157
16
Minerva Intercept BC142 - 0.24m @ 12.6g/t Au & 3.1% Sb
New High Grade Gold Domain
Open Plunge
Minerva Target shape
East of Historic workings

17. Potential new gold mineralized structure: below and separate
from the high-grade Youle deposit
JAN 2021 HIGHLIGHTS:
• 460.5 g/t gold over a partially recovered true width of 0.11 m
in BC176 (1); and
• 165.1 g/t gold over a true width of 0.20 m in BC176W1
17
1. True width of BC176 is quoted from only recovered core. There is approximately an additional 40% of veined core that was not recovered. For more information, please see January 29, 2021, press release.
Initial step out drill delivered very significant intersections
of high gold grades in both the parent hole and
confirmatory wedge

18. • Fosterville is the highest grade mine in the
world based on Q3 2020 production
• Costerfield is the 6th highest grade mine in the
world based on Q3 2020 production and is 30
km east of Fosterville
• Costerfield is mineralogically similar to
Fosterville and probably shares a source and
timing of mineralization
• The emplacement environment of Fosterville
has been located below Costerfield
• Deep drilling at Costerfield looks to unlock a
highly enriched domain within the field
18
Goldfields
Mining Licenses
Major Faults
Stawell
4 Moz @ 10g/t Au
Bendigo
22 Moz @ 15g/t Au
Ballarat
14 Moz @ 12g/t Au
Fosterville
8 Moz @ 12g/t Au
PP – 2.1Moz @ 21.8g/t Au
Costerfield
1+ Moz @ 12g/t AuEq
PP – 288Koz @ 18.9g/t AuEq
Castlemaine
6 Moz @ 13g/t Au
2. Deep Drilling Program: Fosterville-Style Mineralization
Melbourne
Woods Point
Heathcote
Bendigo
Stawell
Ballarat

19. 2. Deep Drilling Program: Timeline
Mandalay intercepted high-grade gold mineralization in deep drilling in 2014, with 2 of 4 intercepts
returning grades that support the Costerfield-Fosterville analogy
19
CSK007: 0.08 m @ 1,361 g/t Au
and CSK012: 0.19m @ 345 g/t Au
2014:
Intersected high-grade mineralization with
two deep holes drilled under Cuffley
2019:
Began deep hole program with first deep
hole under Youle (completed)
2020:
Second deep hole under Cuffley/ Augusta
2021:
Continuing drilling under Cuffley/ Augusta/
Brunswick

20. 3. Regional Target Testing: Building out the Exploration Pipeline
Brown’s Prospect drilling program having
early success
Brown’s drilling program still underway:
• Two out of five holes completed (total of 623 m has
been drilled of the 1,200 m program)
• First drill hole intercepted 14.51 g/t Au, over 1.27m
(true width) in diamond drill hole BWN001
• BWN001 & BWN002 were drilled below the historic
Felix Brown
20

21. BJÖRKDAL
OPERATIONS

22. Björkdal Gold Mine
LONG-LIVED ASSET WITH SIGNIFICANT HIGHER GOLD
GRADE OPPORTUNITIES AND MINING OPTIONALITY
• Currently ramping-up production of higher-grade, more profitable
underground ore
• Exploration success and development ramp-up at higher-grade, wider
Aurora zone continues
22
OVERVIEW
Location Skellefteå, Sweden
Land package 12,949 hectares
Life of Mine 9 years
2021E Production 52,000 – 57,000 Au oz
2021E Cash costs (1) $1,112 per Au oz
2021E AISC (1) $1,435 per Au oz
P&P Reserves (2) 11.5 mt @ 1.47 g/t Au for 544,000 Au oz
1. Cash and all-in sustaining costs are non-IFRS measures. Please refer to the Company's management's discussion and analysis for further information
2. SLR Consulting Ltd. Effective December 31, 2020, documented in an independent NI 43-101 Technical Report that will be filed within 45 days of Feb 23, 2021

23. Björkdal Gold Mine: Operations
23
Operational focus is on ramping-up supply of higher-margin underground ore feed to the mill
-
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
2019 2020
Tonnage
Processing
Underground Open Pit Stockpile
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
2019 2020
Au
grade
g/t
Au
Production
oz
Production & Grade
Au Production Au grade
12,252 Au oz Q4 2020 PRODUCTION
HIGHEST QUARTERLY PRODUCTION IN 2020 AT 1.37 Au g/t

24. Aurora Zone: Key to Lifting Underground Production
• Mineralization found to extend hundreds of metres;
previously was constrained by a marble contact
• Significantly wider and consistently higher-grade than
current ore – open at depth
• Current known mineralization over 500 m horizontally
and 400 m vertically
• Readily accessible; six levels currently being
developed
• Stoping has been initiated on first levels
• Large step-out drilling occurring below and
East and West of currently known mineralization
24
Marble contact
Unexplored and an area of focus
Mineralized zone
historically thought to be
constrained
Emerging growth catalyst in development

25. Aurora Zone Exploration Success
Mineralization open in all directions
• Underground drilling campaign focused on extending
Aurora zone
• Drill results demonstrate potential to extend Aurora in all
laterally and down dip
• High-grade mineralization continuity has been confirmed
at depth and to the east in early 2021
25
NOV 2020 HIGHLIGHTS: HIGH-GRADE
EXTENSIONS TO BOTH THE EAST AND AT DEPTH
• 4.8 g/t gold over a true width of 2.47 m in MU20-007;
• 2.7 g/t gold over a true width of 2.82 m in MU20-016;
• 8.1 g/t gold over a true width of 2.99 m in DOD2020-063;
and
• 3.0 g/t gold over a true width of 3.45 m in DOD2020-073

26. Depth Extension to the Lake Zone
26
FEB 2021 HIGHLIGHTS:
• 92.2 g/t gold over a true width of 0.40 m in MU20-021;
• 32.5 g/t gold over a true width of 1.1 m in MU20-021;
• 16.4 g/t gold over a true width of 1.11 m in MU20-022;
• 119.2 g/t gold over a true width of 0.44 m in MU20-023; and
• 58.5 g/t gold over a true width of 0.32 m in MU20-025
Initial high-grade intercepts demonstrating significant
continuation within the Lake Zone at depth and at
higher grades

27. The Path Forward
27
Ramp-up
Underground
Production
Focus on More
Profitable Ore
Exploring
High-Potential
Targets
• Underground ore is higher-grade and most profitable mill feed
• Plan to ramp-up underground tonnage to +1.1Mtpa in 2021
• Increase Aurora zone’s contribution to overall mill feed
• Focus on other high-grade vein systems
• Extend the mineralization of Aurora zone
• Test potential high-grade skarn deposits
Underground production ramp-up, delineation and development of the Aurora zone currently underway
• Deep drilling under Main and Lake zones
• Exploration update videos available here

28. CAPITAL STRUCTURE
& BALANCE SHEET

29. Capital Structure and Key Shareholders
29
CAPITAL STRUCTURE
Share price (CAD$) (1) $2.28 per share
Shares Outstanding 91.2M
Fully Diluted Shares Outstanding (2) 93.8M
Market Capitalization (CAD$) $207.9M
Cash and Cash Equivalents (USD$) (4) $34.2M
Total Interest-Bearing Debt (USD$) (4) $64.0M
Enterprise Value (USD$) (3,4) $196.1M
ANALYST COVERAGE
BMO Capital Markets Brian Quast
Mackie Research Capital Stuart McDougall
Share price performance
Mandalay Share Price Performance
26%
20%
19%
17%
13%
5%
1. As at February 24, 2021 | 2. Includes: 0.8M RSU and 1.97M employee stock options with exercise prices of: CAD$0.61 – CAD$9.10 and expiry dates from Mar 23, 2021 – Jun 30, 2027.
3. Using exchange rate of CAD$1 = USD$0.80 | 4. From Mandalay’s Financial Statements as of Dec 31, 2020 | 5. Ownership positions are estimates - as at Feb 2021 Note: numbers may be rounded
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
0
0.5
1
1.5
2
2.5
3
25-Feb 25-Mar 25-Apr 25-May 25-Jun 25-Jul 25-Aug 25-Sep 25-Oct 25-Nov 25-Dec 25-Jan
Volume
Share
Price
CAD$ Volume Close
KEY SHAREHOLDERS
CE Mining 26%
GMT Capital 20%
Ruffer LLP 19%
Others 17%
AzValor 13%
West Face 5%

30. Significantly Undervalued Relative to Peers
30
Source: Company filings.
1. Enterprise value reflects share prices as at February 24, 2021 for Peer group and of $2.28 for Mandalay. Mandalay’s 2021E gold equivalent production midpoint graphed.
Note Peer group: Wesdome Gold Mines, Superior Gold, Harte Gold Group, Fosterville South Exploration, Fiore Gold, Robex Resources, Great Panther Mining, Gran Colombia Gold, McEwen Mining, Jaguar Mining, Calibre Mining, Roxgold, Golden Star Resources, and Argonaut Gold
$235
$508
Mandalay Resources Peer Median
EV/Proven & Probable Au oz
$196
$294
Mandalay Resources Peer Median
Enterprise Value (USD$M)1
111
121
Mandalay Resources (Median) Peer Guidance (Average)
2021 Production AuEq. ('000)
Despite operational and financial turnaround, MND trading at lower value relative to peers
~33%
less than
Peers
~54%
less than
Peers

31. SUMMARY
& HIGHLIGHTS

32. Investment Summary
32
Strengthened
Operations
Strengthened Financial
Performance and
Return to Profitability
High-Potential
Exploration Upside
High-Potential and
Fully-funded for
Future Growth
• Costerfield: High-grade Youle vein major growth catalyst
• Björkdal: Ramping-up underground production, focused on higher-margin ore
• Strong growth in revenue, adjusted EBITDA and adjusted net income
• Generated $25.3M of free cash in 2020
• Continuing regional exploration highly-prospective targets at both assets
• Defined pipeline for long-term value creation
• Cash position of $34.2M as at YE2020
• Opportunity for net debt free in 2021
• Fully-funded exploration programs
• High potential for future profitability and
growth

33. A Values-Based and Values-Focused Company
Sustainability underpins everything we do.
WE ARE SUCCESSFUL WHEN:
• Our employees live and work safely and experience the personal
satisfaction that comes with high performance and recognition
• The communities in which we operate value our presence
• Our environmental impact is minimized and causes no
permanent harm
• We have a large, diversified set of customers who are delighted
with and compete for our products
• Our shareholders realize a superior total return on their investment and
support our corporate values
• Our values are visibly demonstrated by strong local management,
at the point of impact with our stakeholders, and coordinated across the
Company for maximum effect
33

34. 34
Edison Nguyen
647-260-1566
e.nguyen@mandalayresources.com
@MandalayAuAg
TSX: MND
OTCQB: MNDJF
mandalayresources.com

35. APPENDICES

36. Non-Core Assets: Chilean Properties
36
La Quebrada Copper-Silver Project
• High-level geological evaluation of property ongoing
• Advanced exploration stage project
• Excellent location and access to infrastructure – 40 km from La
Serena (Region IV, Chile)
• District-wide consolidation opportunities
Land package 8,907 hectares
Ownership 100%
Indicated Resources (1) 459M lbs Cu @ 0.6% Cu & 11.2M oz Ag @ 10 g/t Ag
Resources are excluded in the Company’s total 2020 Mineral Reserves and Resources
1. Source: La Quebrada NI 43-101: “La Quebrada Copper-Silver Project, Casa Piedra Sector” Technical Report completed by Michael Easdon. Filed on SEDAR on Aug. 16, 2017

37. Non-Core Assets: Chilean Properties
37
Cerro Bayo Silver-Gold Mine
• Operations on care and maintenance
• Executed option to purchase agreement with Equus Mining
(Oct 2019) for 36-month period starting from earlier date of when
Equus receives all permits and approvals for exploration drilling or 6
months from signing
Land package 23,106 hectares
Ownership 100%
P&P Reserves (1) 856,000 t @ 284 g/t Ag for 7.8M Ag
& 2.34 g/t Au for 64,000 Au oz
2016 Production 13,792 oz Au, 1,731,031 oz Ag
Challacollo Silver-Gold Project
• Signed definitive agreement with Aftermath Silver for sale
of project, total consideration CAD$10.5M (including
3% royalty on concessions valued at CAD$3M)
• Aftermath Silver’s management team has industry experience and
complementary skillsets that Mandalay believes are necessary to
create value for a development project such as Challacollo
Land package 20,378 hectares
Ownership 100%
Location 130 km SE of Iquique, Northern Chile
1. Source: Current Mineral Reserves number depleted for 2017 production and Reserves sterilized by inundation at Delia NW. Depletion taken from Reserve position contained in NI 43-101 Technical Report prepared by Roscoe Postle
Associates, Effective December 31, 2016 filed on SEDAR March 31, 2017
Streamlining the business and realizing value

38. Costerfield Mineral Reserves
38
Mineral Reserves at Costerfield (as of Dec 31, 2020)
Category Tonnes (kt) Au Grade (g/t) Sb Grade (%) Cont. Au (koz) Cont. Sb (kt)
Proven Underground 206 15.3 5.7 102 11.8
Proven Stockpile 16 14.8 6.1 8 1.0
Probable 394 11.5 2.3 145 9.0
Total Proven + Probable 616 12.8 3.5 255 21.7
Source: Mining Plus Pty Ltd. Effective December 31, 2020, documented in an independent NI 43-101 Technical Report that will be filed within 45 days of Feb 23, 2021

39. Björkdal Mineral Reserves
39
Source: SLR Consulting Ltd. Effective December 31, 2020, documented in an independent NI 43-101 Technical Report that will be filed within 45 days of Feb 23, 2021
Mineral Reserves at Björkdal (as of Dec 31, 2020)
Category Tonnes (kt) Au Grade (g/t) Cont. Au (koz)
Probable Underground 5,623 2.05 371
Probable Open Pit 3,157 1.05 106
Probable Norrberget Open Pit 162 2.80 15
Probable Stockpile 2,551 0.64 53
Total Probable 11,493 1.47 544

40. Management and Board of Directors
40
Dominic Duffy
President, Chief Executive
Officer & Director
Senior Management
Board of Directors
Nick Dwyer
Chief Financial Officer
Belinda Labatte
Chief Development Officer
Toni Streczynski
Vice President, Processing
& Metallurgy
Chris Davis
Vice President, Operational
Geology & Exploration
Bradford A. Mills
Chairman
Braam Jonker
Lead Independent Director
Dominic Duffy
President, Chief Executive
Officer & Director
Rob Doyle
Director
Peter R. Jones
Director
Amy Freedman
Director
Terry Ackerman
Director