From BBC News :
A Chinese manager at a copper smelter in northern Zambia has been admitted to hospital after being assaulted by workers demanding better conditions.
An estimated 500 workers at the Chinese-owned Chambishi mine site started throwing stones at the managers as they attempted to hold talks.
Police came in to restore order and rescue the Chinese who had taken refuge by locking themselves in their offices. Several buildings were burned in the violence and a protester was injured.
