** Shares of King River Resources KRR.AX rise as much as
13.8% to A$0.033, their highest since Jan. 29
** Gold-silver-copper explorer says has produced high purity
alumina (HPA) at >4N (99.99%) purity using a new process
urn:newsml:reuters.com:*:nASX2T85Gc
** The >4N purity grade results are from five HPA production
batches, co says
** Stock posts its biggest intraday percentage gain since
Jan. 25
** Nearly 11.9 mln shares change hands, compared with the
30-day average volume of about 1.9 mln shares
** Stock had risen 11.5% this year, as of last close
(Reporting by Nikhil Subba in Bengaluru)
((Nikhil.Subba.thomsonreuters.com@reuters.net))