** Shares of Silver Mines slide as much as 21.7% to A$0.09, their lowest level since Oct. 3
** The silver miner receives firm commitments for a A$25 mln placement at A$0.092/shr, a 20% discount to last close on Thurs
** Trading volume of ~24 mln shares is 3.4x the 30-day avg
** Stock had fallen 28% this year as of last close
(Reporting by Sherin Sunny in Bengaluru)
((Sherin.Sunny@thomsonreuters.com))