** Red Mountain Mining RMX.AX surges as much as 70% to A$0.017, highest since August, 2024
** Diversified miner acquires Utah Antimony project, expanding its U.S. critical minerals portfolio
** Says project directly adjoins Trigg Minerals' TMG.AX antimony Canyon project, one of the largest and highest-grade antimony projects in the U.S.
** Stock sees busiest session since June 27, with ~56.4 mln shares traded - 19.1x the 30-day avg
** YTD, RMX gains 44.4%