From BBC News :
Some 500 Zambian mine workers have been sacked after rioting and attacking a Chinese manager .
Those sacked have three days to reapply for their jobs, while seven union officials have also been arrested.
The Chinese manager at the Chambishi copper smelter in northern Zambia was admitted to hospital after the assault.
China has become a major investor in Zambia’s run-down copper sector but workers have complained of low wages and poor conditions.
