** Shares of Boss Energy BOE.AX rise 7.4% to A$2.255

** Stock among the top percentage gainers on the ASX 200 benchmark index

** Uranium miner says the Alta Mesa project, in which it holds a 30% stake, is preparing to produce up to an annualized production rate of 1.5 million pounds of uranium

** Alta Mesa Uranium project located in Texas, U.S.

** Stock set for its strongest session since March 20, if current trend holds

** Stock down 6.2% YTD, including current session's moves

(Reporting by Manasi Dasa in Bengaluru)

((Manasi.DasaSundeep@thomsonreuters.com;))