** Shares of Australia's Mantle Minerals Ltd MTL.AX rise
33.3% to A$0.004, set to mark best day since Nov. 9, if current
gains hold
** Mineral explorer signs agreements with De Grey Mining
DEG.AX for various miscellaneous licence for its Western
Australia projects
** Says under agreement De Grey will access co's Roberts
Hill project to complete drilling
** Adds Mantle will retains rights to all results, follow-up
drilling and any discovery on the project
** De Grey Mining is up 1.2%, hitting highest since Oct.24
** MTL has risen 20% this year while DEG has fallen 4.3% as
of last close
(Reporting by Nausheen Thusoo in Bengaluru)
((Nausheen.Thusoo@thomsonreuters.com;))