Before revision: They extracted 1.4 million carats from the exclusive economic zone of Namibia in 2018, and in 2019, De Beers commissioned a new ship which is expected to improve productivity by a factor of two.
After revision: (EEZ)They extracted 1.4 million carats from the exclusive economic zone of Namibia in 2018, and in 2019, De Beers commissioned a new ship which is expected to improve productivity by a factor of two.