Johannesburg – The National Union of Mineworkers (Num) has this week declared a dispute with Nkomati mine‚ a joint venture between African Rainbow Minerals Limited [JSE:ARM] and Norilsk Nickel Africa.The Num said the dispute centred on Nkomati's refusal to bargain on grounds that it was awaiting the approval of a budget."It just cannot be true that they await a budget. "We have been negotiating with them for a number of years between April and September and the issue of budget approval has never emerged‚" Num regional secretary William Mabapa said.The dispute has formally been referred to the Commission for Conciliation‚ Mediation and Arbitration."We are taking them on and we are disappointed that wherever African Rainbow Minerals is involved‚ we first have to go on a strike before our issues get resolved. "We went on a strike at Modikwa mine for four months before we received attention and now again we must go on strike to resolve these‚" Mabapa said.Nkomati mine is situated in Machadodorp in Mpumalanga and produces nickel.*Follow Fin24 on Facebook, Twitter and Google+.