Panel For Historical Engineering Works

The Great County Adit

  • HEW Number:
    1086
  • Designers:
    Lemon, Sir Willaim (Adventurer)
  • Owner:
  • Built:
    1748 on
  • Opened:
Significant features

The largest system of drainage tunnels in Cornwall, over an estimated 38 miles long, extending over 12 square miles, draining at least 71 mines in the Gwennap area, south east of Redruth.

Description

  • Last Updated:11/09/2006

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The Great County Adit
  • Place:
    Redruth, Scorrier, St Day and Gwennap
  • National Grid Ref.:
    SW 762418 (outfall)
  • County:
    Cornwall
  • District Council:
    Carrick
  • SMR Office:
    Cornwall
  • Accessibility:
    visible only with permission of the owner
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