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Hydro-Electric records (He)
Archive of reports, correspondence, records of tunnel and dam site examinations, borehole records relating to the North of Scotland Hydro-Electric Board's schemes in the... -
North Pennine Orefield 1:25 000 scale vein maps
A set of 11 1:25 000 scale OS sheets annotated with the outcrops of the principal veins of the North Pennine Orefield, prepared as aids to the revision of the BGS Geology of the...