Rosia Montana Gold Mine

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MWH provided the planning, permitting, and infrastructure engineering for development of a new gold mine in northwest Romania. The project includes the following scope of work:

  • A 185-meter-high tailing dam
  • A 30-meter-high water management dam
  • The fresh water supply development to the site
  • All access and construction roads for facility development
  • Tailing distribution and water reclaim system
  • Geotechnical engineering for large ore milling equipment foundations and infrastructure
  • Environmental impact assessment support
  • Assistance in developing environmental, waste rock and water management systems including conceptual water treatment designs
    Location: Romania
    Region: Europe-Africa
    Market Sector: Mining
    Client Type: Private Sector
    Status: In Progress

    MWH’s scope of work for engineering services included detailed design for the dams, roadways, plant site structures, and water pump stations and pipelines at the Rosia Montana Mine. Multiple comprehensive geotechnical investigation were conducted to support the designs.

    MWH also conducted environmental related studies and planning for the project.  This included supporting the environmental impact assessment (EIA) for the site.  The EIA focused on protecting terrestrial and aquatic ecosystems, as well as human settlements. It identified and helped manage for potential contamination of water, air, soil with protection against noise and vibration, and proper management of toxic/hazardous substances. MWH conducted detailed studies to assess the environmental impact of waste rock and tailings, including the acid rock potential as well as the fate and transport of cyanide from the ore processing.  To mitigate potential environmental impacts, MWH helped develop systems for waste rock and water management, and water treatment. The EIA was submitted to the Ministry for Water and Environment Protection of Romania for review and approval, and MWH has provided assistance in responding to engineering and environmental related comments.

    All activities at the mine have been performed with an effort to balance the economic, historical, environmental, and social impacts of the project.  MWH is working hand-in-hand with the client to execute this project with a focus on sustainable development for the Rosia Montana community which is at risk due to poor housing conditions, impacted drinking water from historic mining, inadequate medical services, and a lack of employment opportunities.

    The initiation of this project will create 2,340 new construction jobs and encourage economic growth and development in the region through the reopening of the mine. The new mine plan will also take into consideration the rich history of the area and include the preservation of the remnants of the Roman mining culture that existed 2000 years ago.

    The water supply to the village, polluted by years of uncontrolled mining, will once again be potable water and the community infrastructure will be bolstered with training and services from Gabriel Resources. MWH’s commitment to this project and shared vision with the client will help deliver a sustainable environment for Rosia Montana and its future generations. the environmental impact of waste rock and tailings, including the acid rock potential as well as the fate and transport of cyanide from the ore processing.  To mitigate potential environmental impacts, MWH helped develop systems for waste rock and water management, and water treatment. The EIA was submitted to the Ministry for Water and Environment Protection of Romania for review and approval, and MWH has provided assistance in responding to engineering and environmental related comments.

    • Planning
    • Permitting
    • Infrastructure Engineering

    This project will be one of the first permitted under the European Union’s new, more stringent, environmental laws-crafting a model mining project not only for Romania and the EU but for future mining projects worldwide.


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