"The incident happened at (the) 3360 feet level as a team of contractor employees were allegedly loading sludge into a stationary underground rail wagon. One contractor employee sustained fatal injuries in the process," it said in a statement, adding the circumstances surrounding the accident were still uncertain.
Operations at the South Ore Body Shaft were suspended for investigations by government authorities, the company said.
Mopani's Nkana mine is one of the biggest on the continent, about 1 km south-west of Kitwe. Inb operation since 1932, the Nkana mine has so far produced 6,000,000 tons of copper ore.