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North Macedonia
Sasa Mine

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 Location:
10 km N from Makedonska Kamenica, North Macedonia

  Address:
28 Rudarska Str
Makedonska Kamenica
North Macedonia
2304
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Lead
  • Zinc
  • Silver
Mining Method
  • Cut & Fill
  • Sub-level caving
  • Paste backfill
Production Start...
Mine Life16 years (as of Jan 1, 2021)


Owners

Source: p. 64,76
CompanyInterestOwnership
Central Asia Metals PLC 100 % Indirect
Rudnik SASA DOOEL (operator) 100 % Direct
Sasa project is wholly owned by and exploration is operated by Rudnik SASA DOOEL, a wholly-owned subsidiary of CAMl (Central Asia Metals PLC).

Contractors

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Deposit Type

  • Skarn
  • Hydrothermal
  • Replacement


Summary:

SASA Mine comprises the Svinja Reka, Golema Reka and Kozja Reka lead-zinc-silver deposits, which lie within the Serbo-Macedonian Massif, a belt which extends through Serbia, Macedonia, Bulgaria, and eastern Greece into Turkey and hosts a large number of lead-zinc deposits. The mineral deposits are located on the eastern flank of a Tertiary intermediate intrusive complex and related porphyry Cu-Mo system, within which a northwest striking stockwork alteration zone is developed. Lead-zinc-silver mineralisation occurs as stratiform deposits hosted predominantly by quartz-graphite schist and marbles of Lower Palaeozoic age at Svinja Reka and by gneisses at Golema Reka. The mineralisation is considered to relate to the intrusion of Tertiary volcanics. High-temperature hydrothermal fluids and bedding-parallel faulting are responsible for metasomatism of the host sediments, producing skarn and base metal mineralisation.

The well-defined, partially exploited, lenses of lead-zinc-silver mineralisation dip at approximately 35° to the south-west and typically range in true thickness from between 2 and 30 m. The mineralised lenses are present in parallel sheets (typically two or three bodies, namely the hanging wall, central and footwall orebodies), separated by an interburden with thicknesses of 1 to 10 m. The lenses pinch and swell along strike and down-dip. The mineral deposits are considered to be metasomatic skarn-hydrothermal deposits with replacement and bedding-paralle ........


Mining Methods

  • Cut & Fill
  • Sub-level caving
  • Paste backfill


Summary:

Sasa is an underground zinc and lead mine that produces approximately 820,000 tonnes of ore each year. Accessed by adit, the Svinja Reka deposit is currently mined using a sub-level caving method, which utilises the geotechnical characteristics of the weak hanging wall to allow the rock to cave naturally into the void remaining after ore has been blasted. Main haulage levels are at 80 metre intervals, with sub-levels every 7 metres. Ore drives are typically 3.5 metres by 3.5 metres. Ore is mined using a top down approach without backfill. Ore is drilled using single boom jumbos, blasted and then excavated with underground loaders. From the second half of 2022 the Sasa team will transition to a new mining method, cut and fill stoping, with approximately 90% of ore being extracted using this method by 2024. The voids will then be backfilled with paste material containing tailings to provide support, rather than allowing the roof to cave as is the case with the current sub-level caving method. Once blasted, 70% of the ore is then sent via ore passes to the 830m level where it is transported by rail wagons to the Golema Reka shaft for hoisting, and the remaining 30% is hauled to surface via the adit. A total of 818,609 tonnes of ore were mined using the sublevel caving method during the year from the 990m and 910m working areas. This was 1% lower than 2020 predominantly due to 385 metres of unplanned rehabilitation works and localised poor ground conditions. The ore from the ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits202220212020201920182017
Lead Metal in concentrate M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required6566
Zinc Metal in concentrate M lbs  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required4041
Zinc Payable metal M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required817,714 t803,101 t792,068 t
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required820,421 t804,749 t793,332 t
^ Guidance / Forecast.
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Reserves at December 31, 2021:
The Ore Reserve is reported using a NSR cut-off of $32.51/t using metal price assumptions of $2,435/t for zinc and $2,070/t for lead.

The Mineral Resource has been reported based on cut-off grade of 2% combined lead and zinc.

CategoryTonnage CommodityGradeContained Metal
Probable 9.5 Mt Lead 4.1 % 395 kt
Probable 9.5 Mt Zinc 2.8 % 272 kt
Probable 9.5 Mt Silver 22.3 g/t 5,834 koz
Indicated 12.9 Mt Lead 4.5 % 584 kt
Indicated 12.9 Mt Zinc 3 % 390 kt
Indicated 12.9 Mt Silver 24.2 g/t 10,013 koz
Inferred 8.2 Mt Lead 3.7 % 298 kt
Inferred 8.2 Mt Zinc 1.5 % 125 kt
Inferred 8.2 Mt Silver 14.7 g/t 3,915 koz
Total Resource 21.1 Mt Lead 4.2 % 881 kt
Total Resource 21.1 Mt Zinc 2.5 % 516 kt
Total Resource 21.1 Mt Silver 20.5 g/t 13,928 koz

Commodity Production Costs:

CommodityUnits20212020201920182017
C1 cash costs Zinc Equivalent USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.46 / lb   0.44 / lb  
Subscription required - Subscription is required.

Operating Costs:

Units2021202020192018
Total operating costs ($/t milled) USD 44.139.240.338.8

Financials:

Units20212020201920182017
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 13.4  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 102.5   18,664  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 31   14.5  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 71.2   14.5  
Subscription required - Subscription is required



Heavy Mobile Equipment:
HME TypeModelSizeQuantityRef. Date
Drill ....................... Subscription required ....................... Subscription required Dec 31, 2021
Drill jumbo (two boom) ....................... Subscription required ....................... Subscription required Dec 31, 2021
Grader ....................... Subscription required ....................... Subscription required Sep 22, 2017
Jumbo ....................... Subscription required ....................... Subscription required Sep 22, 2017
Jumbo ....................... Subscription required ....................... Subscription required Sep 22, 2017
Jumbo ....................... Subscription required ....................... Subscription required Sep 22, 2017
Jumbo ....................... Subscription required ....................... Subscription required May 5, 2022
Loader ....................... Subscription required 7 t ....................... Subscription required Dec 31, 2021
Loader ....................... Subscription required ....................... Subscription required Sep 22, 2017
Loader ....................... Subscription required ....................... Subscription required Sep 22, 2017
Loader ....................... Subscription required ....................... Subscription required Sep 22, 2017
Rockbreaker ....................... Subscription required ....................... Subscription required Sep 22, 2017
Scoop Tram ....................... Subscription required ....................... Subscription required May 5, 2022
Shotcreter ....................... Subscription required ....................... Subscription required May 5, 2022
Trans Mixer ....................... Subscription required Dec 31, 2021
Truck (fuel / lube) ....................... Subscription required Sep 22, 2017
Truck (service) ....................... Subscription required ....................... Subscription required Sep 22, 2017
Truck (underground) ....................... Subscription required 20 t ....................... Subscription required Dec 31, 2021
Truck (underground) ....................... Subscription required 13 t ....................... Subscription required Sep 22, 2017
Truck (underground) ....................... Subscription required 20 t ....................... Subscription required May 5, 2022
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 25, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required Subscription required Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Technical Report 2017
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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