** Shares of Rumble Resources RTR.AX up 3% at A$0.034
** Miner finds high-grade tungsten assays at Yalgoo field in Western Australia; calls it an "added bonus"
** Stock has dropped nearly 17% YTD, including moves in current session
(Reporting by Jasmeen Ara Shaikh in Bengaluru)
((JasmeenAraIslam.Shaikh@thomsonreuters.com;))