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 Zambian miners kill Chinese manager during pay protest 
 
 Miners' pay at Chinese-run mines was lower than at other foreign-owned mines, a 2011 report said 
 
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 Zambian miners have killed a Chinese manager by pushing a mine trolley at him during a riot at a coal mine in the south of the country. 
 
 A second Chinese was injured, as were several Zambians, during the riot on Saturday. 
 
 The workers were on strike at the mine in protest against delays in implementing a new minimum wage. 
 
 They were angry their wages were lower than a new minimum of $220 (£140) a month paid to shop workers. 
 
 Zambia's minister of labour has gone to the Chinese-owned Collum coal mine in Sinazongwe, 325km (200 miles) south of the capital, Lusaka. 
 
 "Wu Shengzai, aged 50, has been killed by protesting workers after being hit by a trolley which was pushed towards him by the rioting miners as he ran away into the underground where he wanted to seek refugee," Southern province police commissioner Fred Mutondo told state news agency, the Zambia News and Information Services. 
 
 "He died on the spot while his colleague is in hospital." 
 
 Last year, the Zambian government dropped charges against two Chinese managers accused of attempted murder after they fired on miners at the Collum mine during a pay dispute. 
 
 Chinese firms own several mines in southern African countries, including coal and copper operations. 
 
 Copper mining is one of Zambia's main industries, providing nearly three-quarters of the country's exports; many of the mining companies are foreign-owned, and China has invested more than $400m (£250m) in Zambia. 
 
 A 2011 report by Human Rights Watch (HRW) said that, despite improvements in recent years, safety and labour conditions at Chinese mines were worse than at other foreign-owned mines.
– A fresh round of unrest has hit Chinese-operated mines in Zambia. Rioting coal miners killed a Chinese manager on Saturday by pushing a mine trolley at him as he tried to flee, reports the BBC. Another Chinese manager and several Zambians were injured during the incident at the mine, which has a history of unrest between workers and management. Chinese managers at the mine shot and injured at least 13 Zambian miners during a wage protest in 2010. The miners, who earn around $150 a month, were protesting delays in implementing a new minimum wage law that would see them make a minimum of an additional $80 per month. Zambian President Michael Sata was elected last year after campaigning on a promise to crack down on Chinese-owned mines paying "slave wages" and to deport investors who thumb their noses at the country's labor laws, but he has quieted his anti-China rhetoric since taking office, the Wall Street Journal notes.