Fri 03 Mar 1999ESB and unions in overnight talks on disputeAttempts to resolve the ESB dispute and prevent a disruption of power supplies were continuing early this morning by the board's management and trade union representatives.An ESB spokesman said there was no threat of power cuts occurring overnight, but conceded there could be a loss of power today if the talks in Dublin broke down. Pickets have been extended to all main power stations. A spokesman for the Minister for Public Enterprise, Ms O'Rourke, expressed confidence that agreement could be reached.