Zimbabwe's secretary in the ministry of foreign affairs was quoted as saying Botswana had offered to lend Zimbabwe $500 million to support its diamond industry.
The company foresees strong long-term demand for lithium but offered a short-term prognosis clouded by the entry of new projects into the market and slowing growth of demand.
China's coal consumption rose for a second year in a row in 2018, but coal's share of total energy consumption fell below 60 percent for the first time.