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Bolivia
Don Mario Mine

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 Location:
127 km NE from San José de Chiquitos, Bolivia

  Regional Office:
Edificio Centro Empresarial Equipetrol, Piso 3, oficina 301
Santa Cruz de la Sierra
Bolivia
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeOpen Pit
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life3 years (as of Jan 1, 2022)
The Don Mario Mine Complex temporarily suspended operations at the end of the first quarter of fiscal 2020. A care and maintenance (“C&M”) program was implemented at the end of first quarter of fiscal 2020 (late December 2019) and continues today (Q1 2022).

Update on the Don Mario Property includes:
• Oxide Stockpile Project - OSP:
- Oxides Stockpile Project quality assurance (metallurgical) testing is currently in progress. Decision on the project is expected in fiscal 2022
- Subject to favourable completion of technical, economic and funding analysis, OSP is expected to require twelve months of development to start commercial production.
• Tailings Reprocessing Project – TRP:
- Pre-feasibility study planned by H1 FY2023.


Owners

Source: p. 13
CompanyInterestOwnership
Orvana Minerals Corp. 100 % Indirect
Empresa Minera Paititi S.A. (operator) 100 % Direct
The Don Mario Property is owned and managed by Empresa Minera Paititi S.A. (EMIPA). Empresa Minera Paititi S.A. (EMIPA) is a wholly owned subsidiary of Orvana.

Contractors

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Deposit Type

  • IOCG
  • Vein / narrow vein
  • Tailings


Summary:

DEPOSIT TYPES
The deposit was more recently classified by Arce-Burgoa and Goldfarb (2009), as being a deformed example of the Iron Ore Copper Gold (IOCG) association.

The two main deposits types present on the Don Mario Property are exemplified by the copper-dominated UMZ deposit that shows direct association with a large calc-silicate zone, and the gold-dominated LMZ deposit that occurs beneath the UMZ and shows direct association with shear-focused silicification, calcsilicate, potassic, and iron oxide alteration. The Las Tojas and Cerro Felix deposits are similar in style and association with the LMZ, but no substantive additional examples of the UMZ style have been identified on the Property to date.

Tailings Storage Facility (TSF)
Tailings are not a “deposit type” in the conventional sense but in this case, for the purposes of considering Don Mario’s TSF content a Mineral Resource, they are described as an accumulation of loose material with grain size finer than sand, mainly composed by silt size material and less than 20% of clays. The tailings material humidity can vary from 20.8% to 51.4% (Sanchez et al., 2018).

The executed laboratory tests evidence that the tailings can be grouped into fine tailings and coarse tailings, classified respectively as silty sands and silts with low plasticity with the following characteristics:
- The coarse tailings, classified as silty sands, have a field density of 1.468 g/cm3 to 1.712 ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Don Mario Property currently does not have any in-situ Mineral Resources or Mineral Reserves. The only Mineral Resources or Mineral Reserves currently on the Property are hosted in five of the six oxide stockpiles and in the tailings contained within the TSF.

Tailings Reprocessing Project (TRP)
No mining plan is presented for the TRP because it is not sufficiently advanced for the development of a mining plan.

Oxide Stockpiles
The planned mining method for the oxide stockpiles consists of loading conventional end dump trucks with either a wheel loader or an excavator on a mucking schedule from various oxide stockpiles, in order to achieve the desired plant feed blend after haulage from stockpile locations to the crusher area. The goal is to obtain an average blending of Au, Cu an Ag grades with oxide gangue minerals that will ensure optimal metal recoveries.

Loading and transportation activities are planned for daily 12 hour shifts. The Company targets delivering a monthly average of 59,000 tonnes to the blended stockpile. The blended ore will come all thee various OSPs and be blended to achieve the proper mix of grade and oxidized gangue minerals to maximize recoveries. The Company expects full production to take a four month ramp up period.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits202020192018201720162015
Gold Metal in doré oz  ......  Subscription required  ......  Subscription required45,12538,746
Copper Metal in concentrate k lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in doré oz  ......  Subscription required
Gold Metal in concentrate oz 21,10219,084
Silver Metal in concentrate oz  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Ore tonnes mined  ......  Subscription required745,846 dmt856,018 dmt718,692 dmt679,512 dmt938,492 dmt
Tonnes milled  ......  Subscription required739,635 dmt719,328 dmt668,376 dmt806,187 dmt837,722 dmt
Daily milling rate  ......  Subscription required2,185 dmt2,188 dmt2,088 dmt2,436 dmt2,532 dmt
Daily processing capacity  ......  Subscription required2,600 dmt
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Reserves at September 30, 2021:
Indicated and Inferred: Highlighted Base Case Au 0.3 g/t Cutoff considered for mine life.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Stockpiles 2,032 kt Gold 1.85 g/t 120.9 koz
Proven Stockpiles 2,032 kt Copper 1.89 % 38,438 t
Proven Stockpiles 2,032 kt Silver 49.3 g/t 3,221 koz
Measured Stockpiles 2,184 kt Gold 1.84 g/t 129 koz
Measured Stockpiles 2,184 kt Copper 1.89 % 41,283 t
Measured Stockpiles 2,184 kt Silver 49.3 g/t 3,461 koz
Indicated Tailings 3,677 kt Gold 0.48 g/t
Indicated Tailings 3,677 kt Copper 0.53 %
Indicated Tailings 3,677 kt Silver 4.79 g/t
Inferred Tailings 5,474 kt Gold 0.45 g/t
Inferred Tailings 5,474 kt Copper 0.4 %
Inferred Tailings 5,474 kt Silver 4 g/t

Commodity Production Costs:

CommodityUnits202020192018201720162015
Cash costs Copper USD 1.93 / lb   2.22 / lb  
Cash costs Silver USD 5.06 / oz   14.4 / oz  
Cash costs Gold USD 1,023 / oz   948 / oz  
Cash costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required† 890 / oz†   663 / oz†   863 / oz†  
All-in sustaining costs (AISC) Copper USD 2.25 / lb   2.45 / lb  
All-in sustaining costs (AISC) Silver USD 17.5 / oz   15.9 / oz  
All-in sustaining costs (AISC) Gold USD 1,204 / oz   1,053 / oz  
All-in sustaining costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required† 1,087 / oz†   871 / oz†   1,249 / oz†  
All-in costs Copper USD 2.35 / lb   2.46 / lb  
All-in costs Silver USD 18.3 / oz   15.9 / oz  
All-in costs Gold USD 1,264 / oz   1,058 / oz  
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required† 1,287 / oz†   1,050 / oz†   1,378 / oz†  
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units20202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required 12.7   12.2   27.1  
Sustaining costs M USD  ......  Subscription required 7.1   5.2  
Revenue M USD  ......  Subscription required  ......  Subscription required 65.6   66.4   34.3  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required 6.1   11.9   1.5  



Proposed Heavy Mobile Equipment as of February 28, 2022:
HME TypeModelSizeQuantity
Excavator ....................... Subscription required 1.76 cu. m ....................... 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 required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 27, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Technical 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
Annual Information Form 2018
Corporate Presentation 2018
Management Discussion & Analysis 2018
Press Release 2018
Corporate Presentation 2017
Management Discussion & Analysis 2017
Press Release 2017
Technical Report 2017
Management Discussion & Analysis 2016
Subscription required - Subscription is required.

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