Muga Project

Highfield’s flagship Muga Project (“Muga” or “the Project”) is targeting the relatively shallow sylvinite beds in the Muga Project area that covers about 46km2 located in the Provinces of Navarra and Aragón. Mining is planned to commence at a depth of approximately 350 metres from surface and is therefore ideal for a relatively low-cost conventional mine accessed via a dual decline.

During Q1 2022, Highfield relinquished the Goyo Sur and Muga P.I. areas within the Muga project due to their lack of geological interest.

Given Vipasca’s location adjacent to Muga and its geological characteristics, it has always been considered as a natural continuation of the Muga deposit. The interpretation of the geological information obtained in recent years at Vipasca has shown that the potash unit is too deep in the central and western areas of the permit, situated at least more than 1100 meters depth.

Consequently, the Company has relinquished these areas in 2021, preserving the more economical eastern sector, and resulting in the current area covering approximately 14km2. The eastern part of
the Vipasca permit, previously categorised as an Exploration Target, is currently defined as Mineral Resource and is considered an extension to the Muga Mining Concession.

One of the most competitive potash projects globally

Its geographical location makes Muga a great competitive project at an international level

Muga´s location is a major strategic advantage

  • Close access to Atlantic ports ~150 km away allows the product to be exported to large markets such as the US and Brazil.

  • Access to local markets in Spain and across Europe.

  • The deposit presents no technical complexities, and in suitable for conventional room and pillar mining.

  • This type of mining is underground, so Muga has low visual impact.

  • There is easy access to high quality infrastructure, e.g. roads and power.

Muga Project

Progress up to now

As the project progresses, great advances have been made in different areas, as well as a great number of studies and technical analyses to guarantee the sustainability of the Muga Mine.



The Muga Mine Project has received positive Environmental Permit DIA and Mining Concession.


Muga Mine
Optimisation Study

To improve the efficiency of the operations.


Mineral Resource Estimation

External audit to verify the quantity and life of the mine.


Collaboration agreements

With prestigious, and recognised businesses for the mine’s construction.


Project Finance

Agreements with banking entities to finance the project.


Agreement with Iberdrola

Future agreements for the electricity supply for the project.



Pre-agreements with three large commercial agents.


Maritime Transport

Pre-agreement for the maritime transport with the Puerto de Pasajes, Bilbao and Bayone.


Competitive Project

Independent verification that Muga Mine would make Muga one of the highest potash margin producers.

Enhancements incorporated in the Muga Project 

Muga has incorporated suggestions derived from the public participation process.

  • Use of space optimisation:
    Minimisation of occupied spaces (installations and mine openings)
    Reduction of connecting streets to the mine openings and processing plant.
  • Distance between areas of environmental, touristic and urban interest.:
    The facilities have been placed at a distance to protect the cultural heritage and for the preservation of rural spaces, habitats of community interest and leisure spaces.
    They are also away from urban centres to minimise any visual impact.
  • Design optimisation of the water basins to introduce additional preventive measures.
  • Incorporation of technologies and methodologies to reduce atmospheric emissions.
  • Incorporation of the use of renewable energies for sanitary hot water.
  • Layout optimisation for the power line applying the highest standards regarding the protection of the region’s biodiversity.
  • Measures to minimise visual impact by using landfill as a visual barriers to vegetation.
  • Use of surplus excavated earth to create safety dams around the facilities as an extra measure to avoid environmental accidents.
  • Exclusion of mining under populated areas.

Do you have any doubts about this project?