Addison Langhorne Steavenson  Addison Langhorne Steavenson (4 August 1836 – 7 November 1913) was an English Mining Engineer. He became President of the North of England Institute of Mining and Mechanical Engineers (NEIMME) in 1893 after being a member of the Institute for thirty-eight years. Steavenson was married to Anna Maria; they had three daughters named Anna, Frances and Hilda and one son called Addison Langhorne Junior who died young. Steavenson was born on 4 August 1836 in Darlington. He was elected a member of the North of England Institute of Mining and Mechanical Engineers on 6 December 1855 at the age of nineteen. Initially Steavenson worked at Woodifield Colliery, Crook. He then worked for various Cleveland ironstone mines, most notably Normanby and Skelton. He became an expert in the mining geology of the Cleveland district which was exemplified in his article for The Engineer newspaper entitled 'Ironstone Mining in Cleveland'. He later returned to coal mines in the Durham area working as Chief Agent for Bell Brother Ltd.  Steavenson was elected a member of the NEIMME Council in 1867 aged thirty-one and in 1877 he was elected Vice-President of the NEIMME. During his time as Vice-President he visited parts of Spain which inspired his paper 'On the Value of Photography to Mining Engineers'. During his talk he exhibited the photographs he had taken in Bilbao. The exhibition consisted of images of ore being shipped in steamers and wire-rope tramways which also transported ore. He thought these were the most notable photographs as he believed the members had not witnessed the tramways in action before. He additionally exhibited photographs of the local history and culture as he displayed images of Burgos Cathedral as well as pictures of the homes which the local population lived in. The purpose of Steavenson's talk was to display to the engineers that photography was essential in not only gaining personal knowledge, but displaying matters of interest to others who could not see for themselves what was being photographed. He believed that photography was also useful to provide evidence for the future as mining techniques advanced and progressed. Steavenson was congratulated for his paper as the Institute's members complimented not only his mining intellect, but his evident ability as an excellent photographer. Steavenson recollected that his passion for photography had begun ten years prior as he recalls taking his first underground photographs of fungus growing at the Cleveland Mines. This later developed into taking photographs of tubs and mining machinery underground.