** Shares of Australia's Vanadium Resources VR8.AX rise as much as 47.1% to A$0.025, marking their biggest intraday pct gain since July 22, 2025
** Stock hits highest level since March 13
** Co executes non-binding supply agreement with U.S. Vanadium Holding Company LLC for 100% of vanadium-bearing slag production from co's critical minerals smelter (V-Iron Plant)
** Says in discussion to acquire brownfield sites that host, or have previously hosted, large-scale pyrometallurgical operations, others
** About 7.1 mln shares change hands, 9x the 30-day average
** Stock last up 41.2%, with YTD gains of 14.3%
(Reporting by Sneha Kumar in Bengaluru)
((Sneha.kumar@thomsonreuters.com;))