Ballot: wages Correspondence, ballot papers, voting returns, posters and leaflets concerning a vote, held in January 1974, by the branches on an offer made by the National Coal Board (NCB) to increase wages, and a national strike in February 1974. Includes a 'Claimants Handbook for Strikers', received from the East London Claimants' Union by the National Union of Mineworkers (NUM) Derbyshire Area in January 1972; and advice on picketing and strike administration. 1974