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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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  • 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 Life6 years (as of Jan 1, 2018)
In 2022, Monument Mining commenced and progressed the flotation plant construction at the Selinsing Gold Mine to produce salable sulphide gold concentrates and extend the LOM by 6 years for Monument 2.0. Flotation plant construction is the first phase of sulphide gold production and will produce marketable sulphide gold concentrates.

The processing plant is expected to be commissioned in November 2022 before ramping up to full production capacity in January 2023.

Until the flotation plant is operational, both oxide and transitional sulphide materials will continue to be processed through the existing oxide plant. New life of mine production will commence upon completion of the flotation plant to supply marketable sulphide gold concentrates. It is planned that the BIOX® plant will be added to the treatment process to produce gold bullion.


Owners

Source: p. 11,12
CompanyInterestOwnership
Selinsing Gold Mine Manager Sdn. Bhd. (operator) 100 % Direct
Monument Mining Ltd. 100 % Indirect
Monument Mining's 100% owned Selinsing Gold Mine. Selinsing Gold Mine Manager Sdn. Bhd (SGMM) is 100% owned by Monument Mining Limited (Monument), a Canadian gold mining production and exploration company operating in Malaysia.

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.

Historical mining of visible gold at Selinsing by crude means probably occurred for centuries prior to 1888, when British companies began production on a larger scale utilising machinery for primary processing treatment, with intermittent mining continuing at Selinsing up until June 2007 when Monument acquired the Selinsing Project. Mining was restarted in July 2009.

Open pit mining commenced at Buffalo Reef in 2012 and uses the same mining contractor as for the Selinsing Pit. To date the majority of mining and ore treatment history has been associated with oxide material but at the Selinsing and Buffalo Reef deposits an extensive gold sulphide ore deposit remains in fresh and transitional material yet to be mined and treated.

The mining method is conventional open pit drill and blast, load and haul on a 2.5 m mining flitch with a 10 m high blasting bench, reflective of semi-selective mining. The maximum excavator bucket size of 2.3 m3 is matched to this selectivity.

Open pit mining at both Selinsing and Buffalo Reef has historically been carried out by a local contractor Minetech Construction Sdn Bhd (Minetech). who has been involved in the operation since Monument acquired the operation.

The contract is current, and Minetech is responsible for the mining of ore and waste including:


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required22,85412,84518,155
All production numbers are expressed as payable metal.
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Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required166,940 t298,875 t179,351 t
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required3,201,817 t1,044,391 t1,208,069 t
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required19.2 3.49 6.74
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required934,843 t891,936 t847,416 t
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1 Mt
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at 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:

CommodityUnits202220212020201920182017
Total cash costs (sold) Gold USD  ......  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† 958 / oz†  
† Net of By-Product.
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Financials:

Units2022202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 19.2   15.7   23.6  
Operating Income M USD  ......  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 -4.7   -7.2   -1.7  
Sales margin M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 8.1   -0.9   5.5  
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.4   0.2  
Subscription required - Subscription is required



Heavy Mobile Equipment as of January 31, 2019:
HME TypeQuantityLeased or
Contractor
Excavator ....................... Subscription required Leased
Truck (haul) ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
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
Subscription required - Subscription is required.

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