** Australia's Nimy Resources NIM.AX rises as much as 15.4% to A$0.105, its biggest intraday pct gain since May 15
** Stock at its highest level since May 21
** The critical minerals explorer says results from phase-2 drilling programme reveal high-grade gallium in its Mons project in Western Australia (WA)
** Around 4.8 mln shares changed hands, nearly 3x its 30-day average of about 1.7 mln shares
** Stock up 40% this year, including session's gains
(Reporting by Shruti Agarwal in Bengaluru)
((Shruti.Agarwal@thomsonreuters.com;))