Ormsby Allhusen detonates the first explosive charge at Prewley tunnel.

Ormsby Allhusen detonates the first explosive charge at Prewley tunnel.

Ormsby Allhusen, Chairman North Devon Water Board 1946 -1963, detonates the first explosive charge at the ceremony to mark the commencement of the construction of the Prewley tunnel. L to R: ?, Mr S R Rafferty, Consulting Engineer. Mr R T Shears, Clerk to the Board, and other members of the Board. July 1948.
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