** Shares of silver miner GATO.N down as much as 18.02% at
$15.88, on track for worst session ever
** Co to offer 6.5 mln shares of common stock and certain
stockholders to offer 1.82 mln shares of common stock to the
underwriters - GATO
** Signs agreement with Dowa Metals & Mining Co to retire
the outstanding Los Gatos JV term loan
** Co's attributable portion of term loan and related fees
is ~$154.8 mln urn:newsml:reuters.com:*:nFWN2OO0W6
** Stock up ~19% YTD, as of last close
(Reporting by Rithika Krishna in Bengaluru)
((Rithika.Krishna@thomsonreuters.com;))