Cobalt Blue Holdings COB.AX jumps as much as 10.7% to A$0.083, highest since January 30
Co and deep-sea mining firm Glomar Minerals plan to build U.S. refinery in three years to process critical minerals extracted from the bottom of Pacific Ocean
About 2.1 million shares traded, 2.2x the 30-day average
YTD, COB down 3.6%