Tungsten West PLC (AIM:TUN) jumped 12% to 3.5p as the junior said it had partially restarted the Hemerdon mine near Plymouth.
Unusual for being one of the UK's few recent new mine developments, Tungsten West acquired the project in 2019 after it had gone into receivership.
The mine had operated for around three years to 2018 before shutting down due to technical issues and Tungsten West said the partial opening was to process ore left over from that period.
Concentrate from the processing, which was allowed under a temporary permit, had been shipped to an offtaker, the company said, which should generate revenues of more than £400,000.
Aim-listed Tungsten West added it is now working with Devon County Council on a permit for full mining operations to begin again.
Shares rose 0.38p to 3.5p.