I believe tantalum sales will still be classified under revenue, assuming that the principal activities of the company includes that of selling of tantalum concentrate. Otherwise, it'll be classified as other income. Never in any case will it be a service credit that reduces COGS as that would be going against FRS 2 rule of valuing inventories at lower of cost/NRV.
A40 Price at posting:
19.0¢ Sentiment: Buy Disclosure: Held