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Spain
Muga-Vipasca Project

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 Location:
45 km SE from Pamplona, Spain

  Project Contacts:
Avenida Carlos III, 13, 1B
Pamplona
Spain
31002
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageConstruction
Mine TypeUnderground
Commodities
  • Potash
  • Salt (evaporated)
  • Salt (rock)
Mining Method
  • Continuous
  • Room-and-pillar
Production Start...
Mine Life30 years (as of Jan 1, 2019)
The Muga project is located about 50 km from Pamplona, within the municipalities of Undués de Lerda and Sangüesa (Navarra). The Company included the strategic importance of Vipasca as a potential extension of the Muga project.


Owners

Source: p. 3
CompanyInterestOwnership
Highfield Resources Limited 100 % Indirect
The Concession is wholly owned by and exploration is operated by Geoalcali S.L., the wholly owned Spanish subsidiary of Highfield Resources.

Contractors

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Deposit Type

  • Evaporite


Summary:

The depositional basin bounds are defined to the south-west at the east-south east/west-north west trending Rocaforte Syncline near the margin of the Aragón River. To the north-west is the Sierra de Leyre anticlinal structure that overthrusts the Pamplona Marls Formation, the underlying unit of the evaporite. This thrust and two reverse faults run approximately east-west.

The first fault in the north is within the Pamplona Marls over Yesa turbidites. The second is coincident with the Liedena Sandstone, which overlays the evaporite. These faults are considered the extension of the Loiti Fault towards the east which also corresponds to the synsedimentary line between marine sediments within the Basin to the Eocene-Oligocene continental sediments at the thrust front.

The south boundary of the Exploration Target is an important fault running north-west/south-east that extends towards the east acting as limit to Magdalena anticline, considered the southern limit of southeastern section of the Muga Project area. In the west, the fault converges to the Loiti structure beyond the investigated area.


Mining Methods

  • Continuous
  • Room-and-pillar


Summary:

For the planned mine production panels, the tonnage and grade have been diluted by 15 cm of waste in the roof and the floor. The seams are also constrained by a minimum mining height of 2.1 metres which is consistent with the planned mining equipment. The shallow dipping seams utilise a set of two parallel roadways as the main development access, one for fresh air intake and access and the other for exhaust ventilation and conveyor belt materials handling system. The mining method approach is a typical Room and Pillar (“R&P”) panel layout. The room width is specified at 8 metres and the height and pillar size are determined by the total combined seam thickness, geotechnical constraints due to depth below surface and/or any equipment limitations.

The inclined potash seams in the north-west of the deposit require an alternative mining approach to the R&P panel layout used for the shallow dipping seams, to minimise dilution and maximise extraction, taking into consideration the geotechnical constraints and equipment limitations. For the inclined seams the planned dilution effect is considered for extraction by Continuous Miners only. It is assumed that extraction by Road Headers will have no planned dilution as the equipment is able to mine selectively to the dipping seam contact.

Underground access will be by twin parallel declines from surface, over a length of 2.6 km to a depth below surface of approximately 350 meters. The declines, approximately 25 met ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Potash MOP Mt 130
Salt (evaporated) Crystals Mt  ......  Subscription required
Salt (rock) De-icing salt Mt  ......  Subscription required

Operational Metrics:

Metrics
Ore tonnes mined, LOM 179.8 Mt *
Annual production capacity 1.33 Mt of MOP *
* According to 2019 study.

Reserves at October 31, 2021:
Ore Reserves are reported at an 8% K20 cut-off which is based on potash price assumptions, metallurgical recovery assumptions from initial testwork, mining costs, processing costs, general and administrative (G&A) costs, and other factors.

CategoryTonnage CommodityGrade
Proven 45.3 Mt K2O 10.5 %
Proven 45.3 Mt Magnesium 0.3 %
Proven 45.3 Mt KCl 16.6 %
Probable 59 Mt K2O 10 %
Probable 59 Mt Magnesium 0.6 %
Probable 59 Mt KCl 15.8 %
Proven & Probable 104.3 Mt K2O 10.2 %
Proven & Probable 104.3 Mt Magnesium 0.5 %
Proven & Probable 104.3 Mt KCl 16.1 %

Commodity Production Costs:

CommodityUnitsAverage
C1 cash costs Potash EUR  ......  Subscription required *†
Assumed price Potash EUR  ......  Subscription required&nbs
* According to 2019 study / presentation.
† Net of By-Product.

2019 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M EUR  ......  Subscription required
After-tax NPV @ 8% $M EUR  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Subscription required - Subscription is required.


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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