Hecla WWR 5840’ Raise EDC

Project Highlights:

  • Closure
  • Seismic Stability
  • Slope Stability Analysis
  • Waste Rock Storage

Tierra Group prepared an engineering design change to increase the maximum elevation permitted for the mine’s existing WWR. Project included a waste rock dump expansion civil design and stability modeling to verify design complied with regulatory dam safety criteria.

Project Highlights:

  • Closure
  • Seismic Stability
  • Slope Stability Analysis
  • Waste Rock Storage

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