• Shares of Silver Mines fall 11.4% to A$0.155, on track for worst day since June 18 if trends hold

• Silver explorer to raise A$70 million ($49.81 million) at issue price of A$0.145 per share via placement

• Issue price represents a discount of 17.1% to stock's last close

• About 10.7 mln shares change hands, 1.5x the 30-day average of 7.1 mln

• Stock down 29.6% YTD including moves in current session

($1 = 1.4055 Australian dollars)

(Reporting by Jasmeen Ara Shaikh in Bengaluru)