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Poland
Olza Project

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 Location:
60 km NW from Krakow, Poland

  Project Contacts:
Al. 29 Listopada 20
Kraków
Poland
31-401
Phone  ...  Subscription required
Fax+48-32-729-97-51
EmailEmail
WebsiteWeb
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  • Mining
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  • Reserves
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  • Filings & News

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Overview

StagePermitting
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
Mining Method
  • Room-and-pillar
  • Backfill
Mine Life8.4 years (as of Jan 1, 2014)
Rathdowney Resources Ltd. is focused on advancing Project Olza through the permitting process toward a mining license and into production.


Owners

Source: p. 3
CompanyInterestOwnership
Rathdowney Resources Ltd. 100 % Indirect
Rathdowney Resources holds a 100% interest in Project Olza through its wholly owned subsidiary, Rathdowney Polska Sp z o.o.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Mississippi Valley Type


Summary:

Project Olza hosts a Mississippi Valley type zinc-lead deposit.

The property comprises three adjoining Exploration Concessions for the prospecting and exploration for zinc and lead ores. The Zawiercie, Rokitno, and Chechlo concessions are approximately 60 km northwest of the city of Krakow in southern Poland, and have a total surface area of 152.65 km2 .

The Project is within the North European Plain, a relatively flat area with an average elevation between 300 to 350 m above sea level. Within the project area, there is land available for potential surface facilities to support a proposed underground mine and associated processing infrastructure.

Project Olza lies within the Upper Silesian Mining district, near the boundary between the Caledonian Krakow-Myszkow structural zone and the Variscan Upper Silesian coal basin. Zinc and lead deposits in Upper Silesia are principally hosted by dolomites of the Middle Triassic Muschelkalk Formation but locally zinc and lead mineralization also occurs in older rocks, including Devonian limestone and dolomite. In the southwestern part of the district, the Triassic host rocks overlie Upper Carboniferous Coal Measures. However, in the northeastern part of the district, where Project Olza is located, the Triassic rocks transgressively overlap the erosional paleosurface of the Lower Carboniferous and Devonian carbonates, and the PermoCarboniferous strata are missing. Below this succession lie Lower Paleozoic ........


Mining Methods

  • Room-and-pillar
  • Backfill


Summary:

The proposed approach in the PEA considers mining the Olza zinc and lead deposit at a target production rate of 6,000 tonnes per day (“tpd”) or 2.16 million tonnes per annum (“Mtpa”) using variations of underground Room and Pillar (“R&P”) methods with an unconsolidated coarse sand backfill. The sand fill will be contained within rock pillars and timber barricades and is expected to fill fairly tight to the backs of the stopes. The coarse sand is sourced from local quarries and will be transported to the Olza Process Facilities at the site of the historic cement plant via rail.

The mine would be accessed by two declines, and mined material would be moved to the surface by a conveyor along one of these declines.

To facilitate underground access and to expedite the construction schedule two separate declines will be constructed. A decline will be driven from the proposed site of the process plant to intersect with the main haulage drift. This decline ‘CD1’ would be excavated to sufficient width to accommodate a conveyor. A second decline ‘TD1’ would be driven in close proximity to the main portion of the currently defined resource. This second decline would be used for transport of men, equipment and materials to expedite the underground development.

A 3D geological model created to understand the orientation of the mineralization and the spatial variability of the resource drilling shows the mineralization is sub horizontal to shallow dipping ± ........


Crushing and Grinding
Source: Subscription required


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Zinc Concentrate kt 1641,275
Zinc Payable metal M lbs 1,338
Zinc Metal in concentrate M lbs 1971,574
Lead Concentrate kt  ......  Subscription required  ......  Subscription required
Lead Payable metal M lbs  ......  Subscription required
Lead Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required

Operational Metrics:

Metrics
Daily ore mining rate 6,000 t *
Ore tonnes mined, LOM 16,646,573 t *
Tonnes milled, LOM 16.1 Mt *
Annual milling rate 2.16 Mt *
Annual ore mining rate 2.16 Mt *
* According to 2014 study.

Reserves at July 16, 2014:
A minimum cut-off of 2% Zn was used in the resource tabulation.

CategoryTonnage CommodityGradeContained Metal
Inferred 24.4 Mt Zinc 5.53 % 2,975 M lbs
Inferred 24.4 Mt Lead 1.49 % 802 M lbs
Inferred 24.4 Mt Lead / Zinc 7.02 %

2014 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
UG OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 184.5
Backfill costs $M USD  ......  Subscription required
Freight costs $M USD 7.4
Refining costs $M USD  ......  Subscription required
G&A costs $M USD 56.4
Total OpEx $M USD  ......  Subscription required
Income Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of December 31, 2014:
HME TypeSizeQuantity
Bolter ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2014
....................... Subscription required ....................... Subscription required Subscription required Apr 28, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
Annual Information Form 2014
Preliminary Economic Assessment 2014
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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