Joint Working Party on the Revision of the Mineworkers' Wages Structure Records of a joint National Coal Board (NCB) and National Union of Mineworkers (NUM) working party reviewing mineworkers' wages structures. This file concerns underground working and contains: 1 Correspondence and notifications of meetings 2 Decisions of the Joint National Negotiating Committee (JNNC), National Executive Committee (NEC) and Annual Conference 3 Pending meetings and matters arising 4 Joint minutes 5 Reports of the union side meetings 6 Union reports of joint meetings 7 Documents 1975-1978