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59/00130 Happy Valley outlet tunnel, inlet portal area. Exploration of shaft sites. Geological report.
Part of
Date range:
26 Nov 1964 - 26 Nov 1964
Public Access:
Open
Description 1: 59/00130
Description 2: Happy Valley outlet tunnel, inlet portal area. Exploration of shaft sites. Geological report.
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Description 4: There is no data to display
Description 5: RDS 1524: 11.3
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