Telegraph.co.uk Miners in Zambia have killed a Chinese manager by pushing a coal trolley over him as tried to flee rioting strikers at a mine in the south of the country. A copper mine in Zambia Photo: ALAMY 5:46PM BST 05 Aug 2012 A second Chinese manager was injured, as were several Zambian miners, after strike in protest against delays in implementing a new minimum wage erupted into violence. "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 refuge," said Fred Mutondo, Zambia's Southern province police commissioner. "He died on the spot while his colleague is in hospital." Fackson Shamenda, Zambia's labour minister has gone to the Chinese-owned Collum coal mine in Sinazongwe, 200 miles south of the capital Lusaka to try and broker a peace deal. The miners are on strike because their wages are lower than a new minimum wage of £205 a month paid to shop workers. A report by Human Rights Watch last year warned that safety and labour conditions at Chinese mines were worse than at other foreign-owned mines in Zambia. Last year, charges were dropped against two Chinese managers accused of attempted murder after they fired on miners at the Collum mine during a different pay dispute. China has invested more than £250 million in Zambia and mining accounts for over 70 per cent of the poor African country's exports.