** Shares of Horizon Gold HRN.AX rise as much as 53.9% to
A$0.40, marking their biggest intraday pct gain
** The gold explorer says drilling at the Howards Prospect
in its Gum Creek gold project in Western Australia revealed
several intercepts of high-grade gold urn:newsml:reuters.com:*:nASX3S20vW
** Stock hits highest since July 21
** Over 42 mln shares change hands, vs 30-day average volume
of ~28 mln
** Stock down 44.7% YTD, as of last close
(Reporting by Arundhati Dutta in Bengaluru)
((Arundhati.Dutta@thomsonreuters.com;))