ASX-listed shares of American Rare Earths ARR.AX rise as much as 3.1% to A$0.33; last up 1.6%
Co engages U.S.-based engineering services firm Tetra Tech to complete study for American Rare Earths Halleck Creek Project in Wyoming
Says study will evaluate options to convert separated heavy rare earth oxides to metal
ARR down 5.8% YTD