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Tailings practice & technology

Amec Foster Wheeler is a leader in modern tailings disposal system development, design and construction offering innovative tailings management technologies and customised solutions to meet project-specific requirements. We have the experience and professionals to handle all phases of tailings work:

  • Concept and scoping studies
  • Prefeasibility studies
  • Feasibility studies
  • Engineering and construction
  • Operations and monitoring
  • Closure and remediation.

With over 400 tailings clients in over 50 countries, we have the knowledge and expertise to execute projects in all ranges of climates (tropical to arid, hot to cold), elevations and topographies.

Through our team of multi-discipline professionals, we can design tailings solutions that are well integrated with mining and processing facilities, to allow clients safe, reliable and cost effective operations.

Through our subsidiary, Terra Nova Technologies Inc. (TNT), we build tailings stacking systems which incorporate TNT’s industry-leading and patented heap leach stacking technology, customised for tailings applications.

<UL> <li>Trade-off studies on alternative tailings dewatering methods for example conventional and paste thickening and filtration <li>Trade-off studies on embankment materials such as borrow fill, waste rock, tailings sands, embankment types (ring dykes, side hill, cross valley) and construction methods for upstream, centerline and downstream <li>Site selection studies for tailings storage facilities and tailings dewatering facilities <li>Tailings process flow design and optimisation (dewatering, mixing, material selection and transport expertise) <li>Tailings transportation studies from the process plant to TSF (conventional and high density slurry pumping, conveying of filtered tailings) <li>Backfill distribution system (trucking, pumping, piping and boreholes, including supports, waste passes, high pressure pumping, booster and flushing stations) <li>Tailings embankment design <li>Tailings disposal and deposition planning (unthickened, thickened, paste, dry stack) <li>In-pit tailings disposal <li>Backfill plant design (sand, rock, hydraulic and paste fills) <li>Tailings co-disposal with waste rock <li>Water balance (including GoldSim<sup>TM</sup> modeling) and water management, recycling and treatment <li>Seepage and groundwater management <li>Acid rock drainage management, including segregation of potentially acid generating tailings.</li> <UL>

<UL> <li>Dam safety and risk assessment <li>Permitting assistance <li>Construction and operational monitoring <li>Due diligence <li>Materials engineering and testing for surface and underground applications <li>Technical training and ongoing operations support.</li> <UL>

<UL> <li>Black Butte, US <li>Bloom Lake, Canada <li>Bolañitos, México <li>Copper Cliff, Canada <li>El Boleo, México <li>Elkview, Canada <li>El Toqui, Chile <li>Guanaceví, México <li>Haile, US <li>Kemess, Canada <li>Kennecott, US <li>Leeville, US <li>Liberty, US <li>Los Chancas, Peru <li>Midas, US <li>Mont-Wright, Canada <li>Morelos, México <li>Mount Hope, US <li>Ollachea, Peru <li>Port Cartier, Canada <li>Rosemont, US <li>San Bartolomé, Bolivia <li>San Dimas, México <li>San Rafael, Peru <li>Twin Metals, US</li> <UL>

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