** Great Divide Mining GDM.AX jumps as much as 7.9% to 2-week high of A$0.475; set for best day since June 27
** Gold antimony miner announces its first gold pour at the Challenger gold mine in New South Wales, which it operates as part of a joint venture with gold miner Adelong Gold ADG.AX
** Gold pour refers to final stage of production, where the metal is melted and cast before being refined
** Under JV agreement Great Divide Mining's stake in project will increase to 51% after the first pour
** About 78,505 shares traded, 2.4x the 30-day avg
** GDM last up 6.8%, takes YTD gains to 104.4%
(Reporting by Shruti Agarwal in Bengaluru)
((Shruti.Agarwal@thomsonreuters.com))