BUZZ-Australia's Black Bear Minerals gains on silver find at US project
** Shares of Black Bear Minerals BKB.AX rise 9.9% to A$0.5, on pace for their strongest trading session since mid-May
** Specialty miner reports high-grade silver mineralisation at its Shafter project in Texas, U.S.
** Adds, drilling result strongly suggests deposits outside the initial scope, highlights potential for further exploration
** Stock down 50.5% YTD, including the day's moves
