The Mining Association of Great Britain (MAGB) was an industry association of employers in the mining industry of Great Britain that was active from 1854 to 1954.
Its purpose was to review proposed legislation that could affect the owners and take action if necessary.
The MAGB participated in discussions over mine worker's wages, hours and employment conditions.
The MAGB worked with the government's National Conciliation Board for the Coal Mining Industry and the Mineworkers' Federation of Great Britain.
Evan Williams, chairman of the Monmouthshire and South Wales Coal Owners' Association and soon to become virtually the life-president of the MAGB, told the MSWCOA that there would inevitably be some change in structure, and "there are certain owners who think it would be advisable to accept Nationalisation.