Africa's largest sub-Saharan salt mine
Namibia's Walvis Bay Salt Holdings producers 700,000 tonnes of salt per year.
The process takes more than 20 months, as the BBC's Nomsa Maseko reports.
Namibia's Walvis Bay Salt Holdings producers 700,000 tonnes of salt per year.
The process takes more than 20 months, as the BBC's Nomsa Maseko reports.