Topic summary
Alexander Mitchell (engineer)
Alexander Mitchell (13 April 1780 – 25 June 1868) was an Irish engineer who from 1802 onward was blind. He is known as the inventor of the screw-pile lighthouse.
Topic summary
Alexander Mitchell (13 April 1780 – 25 June 1868) was an Irish engineer who from 1802 onward was blind. He is known as the inventor of the screw-pile lighthouse.