Sterling Energy;Business As Usual -Evolution 1028 GMT [Dow Jones] Sterling Energy's (SEY.LN) assets in Mauritania are conducting "business as usual," says Evolution. Adds that although the bloodless coup may have been unsettling, it has so far had "minimal impact" on the Chinguetti development program, exploration drilling, or Sterling's relationship with the oil ministry. Thus reiterates buy rating, 32p target. Shares unchanged at 19.5p. (PBA)