** Shares of Sheffield Resources SFX.AX fall as much as 8.6% to a record low of A$0.032
** Stock marks its worst intraday trading session since April 7
** The construction materials firm says a fire broke out in the feed preparation plant at onshore Thunderbird Sands Mine on April 17
** Says damage from fire was limited to one of two feed preparation screen units, no casualties or injuries reported
** Plant was not operating at the time as it was shut down for scheduled maintenance operations, says company
** Says operations resumed on April 19
** Stock down 52.2% YTD, including the day's moves
(Reporting by Shivangi Lahiri in Bengaluru)
((shivangi.lahiri@thomsonreuters.com))