** Shares of Miramar Resources M2R.AX nearly treble in
value to A$0.023, their highest since April 9
** Stock posts its biggest ever intraday pct gain
** Mineral explorer announces high-grade copper, lead and
silver results from Joy Helen prospect in the Gascoyne region of
Western Australia
** About 69.1 mln shares change hands, compared with the
30-day average volume of 906,139
** Stock had fallen 59.7% this year, as of last close
(Reporting by Sneha Kumar in Bengaluru)
((Sneha.Kumar@thomsonreuters.com;))