Vernon Prior writes:
I left Seaham in 1947 and have rarely been back. I do remember as a child, however, playing around an acoustic mirror (complete with metal rod for supporting the microphone) situated on the high ground (Kinley or Kilney Hill) to the south west of Dawdon, Seaham Harbour. Having looked at the photographs, I can report that it was similar to the Sunderland example in terms of shape and size. I have no idea what state it might be in now, or even if it still exists.
Anyone got any ideas? Let me know! Looking at a map, it would make sense for there to be a mirror in the area, as it would be in the “gap” along the coast between the mirror at Sunderland and the now demolished mirror said to have existed at Clavering, Hartlepool.
UPDATE 15 March 2008: I’ve just rediscovered a previous post about Seaham. It looks like there is agreement on its existence – now we just need to find it!