** Shares of Omnia Metals Group OM1.AX fall as much as 20% to A$0.016, their biggest intraday day pct fall since March 25

** Stock hits its lowest level since October 9

** The exploration co announces assay results from its drill programme across its Salt Creek Project, Iowa returned low levels of gold and base metals

** Says it is advancing its efforts to identify and secure additional gold and rare-earths element projects, particularly within the U.S., where demand for critical minerals continues to grow

** About 12.2 million shares change hands, 7.7 times the 30-day avg

** Stock is down 74.4% YTD, including the session's moves

(Reporting by Anjali Singh in Bengaluru)

((anjali.singh2@thomsonreuters.com;))