BUZZ-Australia's iron ore miners fall, Citigroup cuts ratings
** Australian iron ore miners Fortescue Metals Group , BHP Billiton Ltd and Rio Tinto Ltd (Xetra: 855018 - news) fall
** Fortescue Metals hits lowest since Jan. 30, 2009
** Citigroup (NYSE: C - news) downgrades stocks of Rio Tinto and BHP Billiton, and cuts price target for Fortescue Metals (http://citi.us/1O5RmpP)
** Citigroup sees iron ore falling below $40 on supply, demand pressure
** Australia budget to assume $35 a tonne iron ore - Treasurer Joe Hockey
** Atlas Iron Ltd says on Friday to suspend mining
** The ASX 300 Metals & Mining index falls 1.35 pct (Reuters Messaging: arnab.paul.thomsonreuters.com@reuters.net)