We discuss important article by Eric Trist and Ken Bamforth, “Some Social and Psychological Consequences of the Longwall Method of Coal-Getting,” published in the journal Human Relations in 1951. Eric Trist was a British social scientist best known for his contributions to the field of organization development and one of the founders of the Tavistock Institute. Ken Bamforth was a miner and industrial fellow of the Tavistock Institute. The article’s subtitle is an examination of the psychological situation and defences of a work group in relation to the social structure and technological content of the work system, and explores how a technological change in the coal-mining industry tore apart the social structure of the workers who were supposed to have benefitted from the change. The technological change in question was the mechanization of the process of mining and extracting coal along a very long face, as opposed to the previous ‘hand-got’ methods where small teams would dig out coal from smaller faces.