W Resources PLC (LON:WRES) said it shipped 20 tonnes of tungsten concentrate from the La Parrilla mine in Spain in December.
The company also reported record concentrator recovery rates in December of 58.7% tungsten trioxide, increasing from 40% in November.
There is also a 25-tonne shipment of tin concentrate at La Parrilla awaiting collection by a customer.
W Resources added that it also expects to make at least one more 20-tonne shipment of tungsten concentrate this month.
A production update for the fourth quarter will be announced in January 2021.