P204 CEEFAX 204 Tue 19 Jun 21:14/30       Mr Bill Sirs, leader of the Iron and Steel Trades Confederation, has said the union's executive is to discuss an MUM request for help on Thursday. Mr Sirs told the ISTC conference, which started at Scarborough today, that the executive would then recommend what should bj done about the request. The MUM wants talks with the ISTC aimed at cutting fuel supplies to the minimum needed to protect the steel plants. If there is no response, the miners' union has threatened to stop deliveries of all coke and coal to steelworks. News index 102/202 Newsreel 119/219