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Malaysia
Selinsing Mine (Selinsing Sulphide Expansion)

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 Location:
30 km NW from Kuala Lipis, Malaysia
  Regional Office:
Lot 157, Jalan Bukit Bius
Kuala Lipis
Malaysia
27200
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2029
Selinsing mine consists of the Selinsing, Buffalo Reef, Felda Land, Peranggih and Famehub properties.

During fiscal 2023, the Monument Mining has achieved its first near-term milestone by completion of the conversion of the oxide processing plant to a dual treatment plant for oxide and sulphide ores at Selinsing Gold Mine. The first half fiscal year completed construction and commissioning of the flotation plant; the second half fiscal year commenced sulphide production, which has been ramped up to commercial production successfully.

Gold dore production ceased November 2022 breakeven, first gold concentrate shipment commenced in June 2023. Commercial production of concentrate began in August, 2023 subsequent to the year end.

Owners

Source: p. 11,12,25
CompanyInterestOwnership
Monument Mining Ltd. 100 % Indirect
Monument Mining, through its subsidiaries, owns 100% of the Selinsing gold mine.

Contractors

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Deposit Type

  • Breccia pipe / Stockwork
  • Mesothermal
  • Vein / narrow vein

Summary:

The Buffalo Reef and Selinsing gold deposits are thought to be mesothermal lode gold deposits, with auriferous quartz-pyrite-arsenopyrite±stibnite veining, with associated hydrothermal alteration. The two deposits are structurally controlled and thought to be part of the same structural trend, with the Buffalo Reef deposit occurring along strike and to the north of the Selinsing deposit.

The Selinsing gold deposit is hosted by a 20 m to 100 m thick shear zone that dips 55° to 75° towards mine grid east (082° true grid). This zone or “envelope” of sheared rocks has been variably mineralised and intruded by gold-bearing quartz veins and stockworks. The quartz veins are likely to have been emplaced along fault surfaces, which are thought to be reverse thrusts caused by compression from the east. Strike-slip movement is not thought to be significant; however, a north-westerly trending structure, which post-dates the gold mineralisation, has been identified and may have a strike-slip component. The host rocks for the Selinsing shear zone consist of a series of finely interbedded argillites and very fine-grained arenites, along with sequences of quartz-rich, variably silicified sediments of likely tuffaceous origin, which are referred to as “felsic tuff” and a few thin beds of quartzite conglomerate. These host rocks are collectively known as “the mine sequence series”.

The mine sequence sediments are deep marine epiclastic sediments, originally laid down in l ........

Mining Methods

  • Truck & Shovel / Loader

Summary:

The Selinsing operation consists of:
• Selinsing Gold Mine;
• Buffalo Reef Project;
• Exploration leases and blocks.

In fiscal year 2023, Monument transitioned from oxide ore mining to sulphide ore mining.

On March 27, 2023, the Company announced commencing mining high grade sulphide ores at Selinsing Gold Mine for commercial gold concentrate production. New mining equipment has been mobilized to increase mining production rates to meet the commercial production rates through the sulphide treatment plant.

Mining started at Buffalo Reef area. There are three main open pits in the Buffalo Reef area (BRC2, BRC3 and BRC4). A small satellite pit (BR North) is situated to the north about 5km from the process plant. The three main pits are designed within three separate mining stages to reduce waste stripping early on. The first stages of BRC2 and BRC3 open pits are currently being progressed to supply ore for the processing plant.

Mining Strategy and Optimization
The mining plan has been further optimized by Snowden Mining Industry Consultants Pty Ltd in March 2023. Buffalo Reef sulphide ore contains a level of arsenic (As) and at some areas - antimony (Sb), which will be carefully controlled during the operations to produce higher return gold concentrates.

Subject to our stockpile strategy, the grade control ore blocks are categorized into high, medium and lowgrade ores above the gold cut-off grade of ........

Crushing and Grinding
Source: Source p.267-271
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

Production:

CommodityUnits2023202220212020201920182017
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required22,85412,845
All production numbers are expressed as payable metal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202320222021202020192018
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required11 19.2 3.49
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required263,074 t166,940 t298,875 t
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required2,887,441 t3,201,817 t1,044,391 t
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required675,708 t934,843 t891,936 t
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1 Mt1 Mt
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at March 31, 2018:
The Mineral Resources and Reserves as at 30th June 2023 are unchanged from March 31, 2018.

Mineral Reserves: for Oxide - above approx. 0.4 g/t Au cut-off, for Transition - above approx. 0.75 g/t Au cut-off, for Sulphide - above approx. 0.75 g/t Au cut-off.
Mineral Resources: for Oxide - above 0.3 g/t Au cut-off, for Transition - above 0.5 g/t Au cut-off, for Sulphide - above 0.5 g/t Au cut-off.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Sulphide 45 kt Gold 1.53 g/t 2 koz
Proven Oxide 1,265 kt Gold 0.47 g/t 19 koz
Proven Total 1,310 kt Gold 0.51 g/t 21 koz
Probable Sulphide 2,680 kt Gold 2.03 g/t 175.1 koz
Probable Oxide 991 kt Gold 0.91 g/t 29 koz
Probable Transitional sulphide 757 kt Gold 1.72 g/t 41.9 koz
Probable Total 4,428 kt Gold 1.73 g/t 246 koz
Proven & Probable Sulphide 2,725 kt Gold 2.02 g/t 177 koz
Proven & Probable Oxide 2,256 kt Gold 0.67 g/t 48 koz
Proven & Probable Transitional sulphide 757 kt Gold 1.72 g/t 42 koz
Proven & Probable Total 5,738 kt Gold 1.45 g/t 267 koz
Measured & Indicated Sulphide 8,097 kt Gold 1.6 g/t 417 koz
Measured & Indicated Oxide 2,798 kt Gold 0.68 g/t 61 koz
Measured & Indicated Transitional sulphide 1,086 kt Gold 1.49 g/t 52 koz
Measured & Indicated Total 11,981 kt Gold 1.38 g/t 530 koz
Inferred Sulphide 5,563 kt Gold 1.79 g/t 319 koz
Inferred Oxide 349 kt Gold 1.05 g/t 11.8 koz
Inferred Transitional sulphide 485 kt Gold 1.22 g/t 19 koz
Inferred Total 6,397 kt Gold 1.7 g/t 350 koz

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Total cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 753 / oz†   936 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 958 / oz†  
† Net of By-Product.
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Financials:

Units2023202220212020201920182017
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 19.2   15.7  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 3.5   -0.9  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -4.3   -7.4  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -4.7   -7.2  
Sales margin M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 8.1   -0.9  
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.4   0.16  
Subscription required - Subscription is required

Water Supply
Source: Subscription required

- subscription is required.

Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusLeased or
Contractor		Ref. Date
Excavator ....................... Subscription required Existing Leased Mar 27, 2023
Excavator ....................... Subscription required Existing Leased Jun 30, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Jan 31, 2019
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased Jan 31, 2019
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Annual Report 2023
Corporate Presentation 2023
Financial Review 2023
Management Discussion & Analysis 2023
Press Release 2023
Financial Review 2022
Management Discussion & Analysis 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Financial Review 2018
Management Discussion & Analysis 2018
Other 2018
Annual Report 2017
Management Discussion & Analysis 2017
Technical Report 2016
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