Rainbow Rare Earths Ltd (AIM:RBW, ASX:RRE) says its Johannesburg pilot plant is performing to plan and has produced commercial-grade rare earth product. The company says the quality de-risks the project and supports plans to move further downstream. Cloudbreak Discovery PLC (LSE:CDS) shares jumped after it moved to buy 90% of the Paterson gold-copper project in Western Australia. The company plans modern geophysics to refine drill targets near Greatland Gold’s Telfer mine. Valereum PLC (LSE:VLRM) has signe ...