Ann: Half Yearly Report and Accounts, page-18

Keeps the snouts at the trough well fed!   I cannot answer your question, frankly I can't understand it, it makes no sense commercially.
I ask the question
Why do you think the smart operators build smelters where power/electricity costs are cheap and then buy or develop large scale manganese ore mines in places like Gabon, Ghana and South Africa.
Today shipping costs are cheap when compared to power costs and logistics in the country you're operating in.

There are many companies over the years that think they have a good idea, many go broke and shareholders suffer. Whatever happened to Bligh mining?  
https://minelistings.com/mines-for-sale/bligh-mining-project-manganese-for-sale/