 Its classes were taught in the Institute's lecture theatre.It was renamed Armstrong College and was for many decades part of the University of Durham, later to become Kings College and then Newcastle University.Similar institutions to the Institute were set up in other parts of Britain and informal collaboration led to the creation in 1889 of the Federated Institution of Mining Engineers, comprising NEIMME; Chesterfield and Midland Counties Institution of Engineers; Midland Institute of Mining, Civil and Mechanical Engineers; South Staffordshire and East Worcestershire Institute of Mining Engineers and later the North Staffordshire Institute of Mining and Mechanical Engineers, the Mining Institute of Scotland and the Manchester Geological and Mining Society.