Career
He lived at Stella Hall, Newcastle upon Tyne, and owned a quarter share in the Stargate Pit which was the site of the Stargate Pit Explosion of 1826. In 1830 he sunk a new shaft, the "Great Seam Pit", at Prestongrange Colliery in East Lothian, now the site of the Prestongrange Industrial Heritage Museum. Dunn tried to improve safety in mines Matthias Dunn"s son was the architect Archibald Matthias Dunn.
