** Shares of Challenger Exploration Ltd CEL.AX rise as
much as 6.7% to A$0.16, track best day since Dec. 22, if gains
hold
** Gold producer announces upbeat results from an ongoing
drill program at the Hualilan Gold Project, located in San Juan,
Argentina
** Says drilling continues to show the presence of coherent
shoots of significantly higher-grade mineralisation at depth
which remain open in several locations
** Stock has fallen 14.3% this year, as of last close
(Reporting by Jaskiran Singh in Bengaluru)
((Jaskiran.Singh@thomsonreuters.com;))