Asset report

Grouse Creek (Closed) gold mine

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Report summary

Two orebodies make up the proven and probable reserve.  Prior to start-up the Sunbeam ore-body reserve was stated as 6.5Mst grading 0.053oz/st Au and 0.4oz/st Ag. In 1995 significant shortfalls in tonnage and grade of ore were encountered during mining because ore zones were less continuous and thinner than envisaged.  As a result some 8Mt of ore were removed from the ore reserve, and Hecla wrote-down the carrying value of its 80% interest in the property by $97M.

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  • Document

    Grouse Creek (Closed) gold mine

    XLS 119.00 KB

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    Grouse Creek (Closed) gold mine

    PDF 822.51 KB

Table of contents

  • Key facts
  • Summary and key issues
  • Location maps
  • Geology
    • Mining
    • Process
  • Timeline
  • Economic assumptions

Tables and charts

This report includes 2 images and tables including:


  • Detailed map


  • Key facts: Table 1

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