Post-1945
In January 1945 the MFGB was superseded by the National Union of Mineworkers. Within the organisation, each coalfield continued to exercise a degree of autonomy, having its own District Association, President, General Secretary, and headquarters. Originally, a national strike required a two-thirds majority in a ballot of members. This proved near impossible to achieve and the majority was reduced to 55% in 1970 and then to 50% in 1984. Additionally, regions of the union could call their own strikes. Different areas varied greatly as to how militant they were and it was not uncommon for animosity to exist between areas.
Read more about this topic: National Union Of Mineworkers (Great Britain)