the UDM
/ðə ˌjuː diː ˈem/
/ðə ˌjuː diː ˈem/
the Union of Democratic Mineworkers
- a British trade union for coal miners. It was formed in 1985 as a protest against the actions of the NUM, which had failed to hold an election among its members before the miners' strike in the previous year.
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the UDM