Aquarius Platinum, the world’s fourth-largest platinum miner, reported a fall in revenue and core operational earnings for the third-quarter from a year earlier.

The miner, which operates in South Africa’s platinum belt that is prone to labour unrest, said mine earnings before interest, tax, depreciation and amortization (Ebitda) was $11m for the quarter ended March 31.

It reported mine Ebitda of $30m a year earlier.

Revenue fell to $60m from $100m a year ago. However, revenue and mine Ebitda rose from the previous quarter, driven by higher output at its key Kroondal mine.